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Fish beginning with A
Aba - The aba has a long and slender body, with no caudal, pelvic, or anal fins.
Abbott's moray eel - The Abbott's moray eel is a shallow-water, inshore reef species, though not often seen.
Abbottina binhi - Abbottina binhi is a species of ray-finned fish in the genus Abbottina.
Abbottina liaoningensis - Abbottina liaoningensis is a species of ray-finned fish in the genus Abbottina.
Abbottina obtusirostris - Abbottina obtusirostris is a species of ray-finned fish in the genus Abbottina.
Abbottina springeri - Abbottina springeri is a species of ray-finned fish in the genus Abbottina.
Abrau sprat - Clupeonella abrau is a species of fish in the Clupeidae family.
Abyssal rattail - The abyssal rattail, Coryphaenoides murrayi, is a fish of the genus Coryphaenoides, found around southern Australia, Fiji, and the east coast of New Zealand at depths of between 1,200 and 1,300 m.
Abyssobrotula galatheae - Though uncommon, this species is known from the tropical and subtropical waters of all oceans.
Acadian redfish - Found in the northern Atlantic Ocean, the Acadian redfish lives in depths of 70 – 592 meters.
Acanthicus adonis - The Adonis Pleco is dark brown to black with numerous white spots as a juvenile.
Acanthobrama centisquama - Acanthobrama centisquama is a species of ray-finned fish in the Cyprinidae family.
Acanthobrama hulensis - Acanthobrama hulensis is a species of ray-finned fish in the Cyprinidae family.
Acanthobrama telavivensis - Acanthobrama telavivensis, the Yarkon bleak, is a species of ray-finned fish in the Cyprinidae family.
Acanthobunocephalus nicoi - Acanthobunocephalus nicoi can be differentiated from other aspredinids by the presence of a dorsal fin spine locking mechanism and a rigid dorsal fin spine.
Acanthoclinus matti - Acanthoclinus matti is a longfin of the family Plesiopidae, found only in New Zealand at depths of up to 17 m.
Acantholingua ohridana - Acantholingua ohridana is a species of fish in the Salmonidae family.
Acanthopoma annectens - Acanthopoma annectens is a species of catfish of the family Trichomycteridae, and the only species of the genus Acanthopoma.
Acantopsis dialuzona - Acantopsis dialuzona is a loach living in freshwater in Southeast Asia.
Acantopsis octoactinotos - Acantopsis octoactinotos has a long straight snout, unlike the similar Horseface loach , in which the snout has a down-turned shape.
Acapoeta tanganicae - Acapoeta tanganicae is a species of ray-finned fish in the Cyprinidae family.
Acentronichthys leptos - Acentronichthys leptos is the only species of catfish in the genus Acentronichthys of the family Heptapteridae.
Acheilognathus elongatus - The Elongate Bitterling is a species of ray-finned fish in the Cyprinidae family.
Acheilognathus rhombeus - When spawning, the females deposit their eggs inside bivalves, where they hatch and the young remain until they can swim.
Achilles tang - They are a mid-sized surgeonfish reaching a maximum of 10in/25 cm at adulthood.
Achondrostoma arcasii - Achondrostoma arcasii is a species of ray-finned fish in the genus Achondrostoma.
Achondrostoma occidentale - Achondrostoma occidentale is a species of ray-finned fish in the genus Achondrostoma.
Achondrostoma salmantinum - Achondrostoma salmantinum is a species of ray-finned fish in the genus Achondrostoma.
Acoupa weakfish - The acoupa weakfish, Cynoscion acoupa, is a croaker of the family Sciaenidae, found in the western Atlantic from Panama to Argentina, at depths down to 20 m.
Acrochordonichthys chamaeleon - Acrochordonichthys chamaeleon is a species of catfish of the family Akysidae.
Acrochordonichthys falcifer - Acrochordonichthys falcifer is a species of catfish of the family Akysidae.
Acrochordonichthys guttatus - Acrochordonichthys guttatus is a species of catfish of the family Akysidae.
Acrochordonichthys mahakamensis - Acrochordonichthys Mahakamensis is a species of catfish of the family Akysidae.
Acrochordonichthys pachyderma - Acrochordonichthys pachyderma is a species of catfish of the family Akysidae.
Acrochordonichthys rugosus - Acrochordonichthys rugosus is a species of catfish of the family Akysidae.
Acrochordonichthys strigosus - Acrochordonichthys strigosus is a species of catfish of the family Akysidae.
Ado lakok - Mormyrus caschive is a species of fish in the Mormyridae family.
Adolf's catfish - The fish will grow in length up to 2.
Adriatic salmon - This species spawns in the early spring and is an obligatory freshwater fish.
Adriatic sturgeon - Its natural habitat is rivers.
African angelshark - The African angelshark, Squatina africana, is an angel shark of the family Squatinidae found at depths down to 500 m.
African banded barb - It is found mainly in Angola and Zambia, extending into neighboring Botswana, the Democractic Republic of the Congo, Namibia and Zimbabwe.
African bullhead - The African bullhead is a species of fish in the Claroteidae family.
African butter catfish - The African butter catfish possesses a compressed body and very small adipose fin.
African butterfly cichlid - Anomalochromis thomasi is a species of fish in the family Cichlidae, the only species in the genus Anomalochromis.
African butterflyfish - The African butterflyfish, Chaetodon dolosus, is a butterflyfish of the family Chaetodontidae found in the Western Indian Ocean, at depths from 40-200 metres in length.
African carp - Labeo brachypoma is fish in genus Labeo.
African carp - The Tana Labeo is a species of ray-finned fish in the Cyprinidae family.
African chimaera - The African chimaera is a species of fish in the Chimaeridae family.
African hind - A Grouper from the Indo-Pacific that occasionally makes its way into the aquarium trade.
African Knife Fish - This fish reaches 30 centimetres SL in length.
African lanternshark - Reproduction is ovoviviparous.
African moony - This species is quite widely kept in brackish and saltwater water aquaria; although it has only very rarely been bred in captivity, it is otherwise hardy and easy to care for.
African pompano - The African pompano is one of three members of the diamond trevally genus Alectis, which itself is one of 33 genera encapsulated in the jack family Carangidae.
African pygmy skate - The African dwarf skate or South African pygmy skate is a species of fish in the Rajidae family.
African red snapper - African red snapper is a species of fish in the Lutjanidae family.
African redfinned barb - Barbus ablabes is a species of ray-finned fish in the genus Barbus.
African ribbontail catshark - The African ribbontail catshark is ovoviviparous giving birth to two young per litter.
African sawtail catshark - The African sawtail catshark, Galeus polli, is a cat shark of the family Scyliorhinidae found from southern Morocco to Namibia, at depths of between 200 and 720 m.
African sea catfish - The Madagascar sea catfish is a species of fish in the Ariidae family.
African snakehead - Its native range is southern Benin to southern Nigeria, primarily the Oueme River and the basin of the Niger River.
African threadfish - The African threadfish is one of three members of the diamond trevally genus Alectis, which itself is one of 33 genera encapsulated in the jack family Carangidae.
Agassiz' dwarf cichlid - Male Agassiz's dwarf cichlids are territorial by nature.
Agrakhan shad - Alosa sphaerocephala is a species of ray-finned fish in the genus Alosa.
Ahuru - The ahuru is a small deepwater fish, the only fish of the genus Auchenoceros, found on the east coast of New Zealand.
Airsac catfish - Heteropneustes is a genus of catfishes of the family Clariidae.
Ajamaru lakes rainbowfish - The Ajamaru Lakes rainbowfish is a species of fish in the Melanotaeniidae family.
Akagarei - The flathead flounder spawning season is from February to April, and spawning takes place at depths of 180 and 200 metres .
Akysis longifilis - This is a small catfish, up to 55 mm standard length, with a dark brown body marked with yellowish saddle-shaped markings, very long barbels and a forked caudal fin.
Akysis pulvinatus - This is a small catfish, none of the type specimens exceeding 30 mm standard length.
Alabama cavefish - Only nine specimens of the cavefish have been observed and scientists estimate that less than 100 of the fish are left on the planet.
Alabama shad - The Alabama shad spawns in medium to large flowing rivers from the Mississippi River drainage to the Suwannee River, Florida.
Alabama sturgeon - The Alabama sturgeon was first proposed for protected status in the early 1990s, although by then the fish was already so rare its survival was uncertain.
Alaska blackfish - The hardiness of the Alaska blackfish is of mythical proportions.
Alaska plaice - Most commercial fisheries do not want to catch Alaska plaice; but many are caught by commercial trawlers trying to catch other bottom fish.
Alaska pollack - The Norwegian pollock , a rare fish of Norwegian waters, may actually be the same species as the Alaska pollock.
Alaska whitefish - The Alaska whitefish is a species of whitefish in the family Salmonidae.
Albacore - These tuna do not consume as much fish in their diet as other tunas, and will eat the tiny larvae of stomatopods , true shrimp, and crabs, as well as small fish.
Albanian barbel - Luciobarbus albanicus is a ray-finned fish species in the family Cyprinidae.
Albanian Roach - The Albanian Roach is a species of ray-finned fish in the Cyprinidae family.
Albert lates - The Albert lates is a species of fish in the Latidae family.
Albino walking fish - Walking catfish are around 30 cm in length and have an elongated body shape.
Alburnus belvica - Alburnus belvica is a species of ray-finned fish in the Cyprinidae family.
Alburnus heckeli - Alburnus heckeli is a species of ray-finned fish in the Cyprinidae family.
Alburnus orontis - Alburnus orontis is a species of ray-finned fish in the Cyprinidae family.
Alburnus qalilus - Alburnus qalilus is a species of ray-finned fish in the Cyprinidae family.
Aldrovandia gracilis - Aldrovandia gracilis is a species of fish in the Halosauridae family.
Alert pigfish - The alert pigfish, Alertichthys blacki, is a pigfish, the only species in the genus Alertichthys, found around New Zealand at depths between 100 and 600 m.
Alestes stuhlmannii - Alestes stuhlmannii is a species of fish in the Alestiidae family.
Aleutian skate - The Aleutian skate is a species of skate in the family Rajidae.
Algerian barb - The Algerian Barb is a ray-finned fish species in the family Cyprinidae.
Alghad snowtrout - Chush Snowtrout is a species of ray-finned fish in the genus Schizopyge.
Allegheny River pike - Muskellunge are known by a wide variety of trivial names including Ohio muskellunge, Great Lakes muskellunge, barred muskellunge, Ohio River pike, Allegheny River pike, jack pike, unspotted muskellunge and the Wisconsin muskellunge.
Allen's river garfish - Allen's river garfish is a species of fish in the Hemiramphidae family.
Allison's tuna - The yellowfin tuna is often marketed as ahi tuna, from its Hawaiian name ʻahi although the name ʻahi in Hawaiian also refers to the closely related bigeye tuna.
Alluaud's haplo - Its natural habitats are freshwater lakes, freshwater marshes, and inland deltas.
Almorha loach - The yoyo loach, in comparison with the clown loach is more active than its relative, but it is still relatively docile.
Alosa vistonica - Alosa vistonica is a species of fish in the Clupeidae family.
Alosa volgensis - Alosa volgensis is a species of ray-finned fish in the genus Alosa.
Alpine char - The Arctic char is closely related to both salmon and trout and has many characteristics of both.
Alpine galaxias - Alpine galaxias are speckled olive-green over a light brown base.
Alticorpus macrocleithrum - Like all members of Alticorpus, macrocleithrum has enlarged lateral pores on the lower part of the head.
Alticorpus mentale - Alticorpus mentale is a species of fish in the Cichlidae family.
Alticorpus peterdaviesi - Alticorpus peterdaviesi is a species of fish in the Cichlidae family.
Altolamprologus calvus - It is physically similar to its close relative A.
Alvord chub - The Alvord chub is a small fish, with adults ranging up to 14 cm in length, but with many half that size.
Amaralia hypsiura - Amaralia hypsiura are found throughout the Amazon River basin.
Amatola barb - Amatola Barb is a species of ray-finned fish in the genus Barbus.
Amazon molly - In nature, the Amazon molly typically mates with a male from one of four different species, either P.
Amazon puffer - Wild Colomesus asellus are reported to consume benthic crustaceans, fish, planktonic invertebrates, and plants.
Amber darter - The amber darter is typically less than 2.
Amblyceps carinatum - This is a small catfish found in fast flowing streams.
Amblydoras monitor - Amblydoras is a genus of catfishes of the family Doradidae.
Amblyeleotris harrisorum - This is an elongated goby up to 75 mm standard length.
Amblyeleotris marquesas - This is an elongated goby up to 7 cm standard length.
Amblyeleotris rubrimarginata - This is a fairly elongated goby up to 8 cm standard length.
Amblyglyphidodon indicus - Up to 8.
Ambon chromis - Chromis amboinensis is a Chromis from the Western Pacific.
Ambon damsel - Pomacentrus amboinensis is a Damselfish from the Western Pacific.
Ambon scorpionfish - The Ambon scorpionfish is shaggy, and can change its color for the ideal camouflage.
Ambophthalmos magnicirrus - The frilled toadfish, Ambophthalmos magnicirrus, is a fathead of the family Psychrolutidae, found on the continental shelf around New Zealand's Macquarie Island.
American angler - The American anglerfish is unique in its appearance and has no relatives with which it can be confused in the areas where it is caught.
American black bass - The largemouth is an olive green fish, marked by a series of dark, sometimes black, blotches forming a jagged horizontal stripe along each flank.
American brook lamprey - Blind and wormlike as ammocoetes or larvae, the american brook lamprey metamorphoses into a brown cylinder, almost 8 inches long.
American butterfish - Fish of this species are usually deep-bodied, flattened sideways and somewhat circular or rounded, with blunt noses and small mouths with weak teeth.
American chub - The Fallfish, Semotilus corporalis, is a species in the family Cyprinidae, order Cypriniformes.
American dab - American plaice may be an intermediate host for the nematode parasite Otostrongylus circumlitis, which is a lungworm of seals, primarily affecting animals less than 1 yr of age.
American flagfish - The flagfish or American flagfish, Jordanella floridae, is a killifish native to Florida.
American gizzard shad - Like other gizzard shads, the body is deep somewhat forward of the middle.
American perch - Yellow Perch reach sexual maturity at one to three years of age for males and two to three years of age for females.
Amistad gambusia - The Amistad gambusia was a small fish known only to occur in Goodenough Spring, Val Verde County, Texas, a tributary of the Rio Grande.
Amoy fanray - Platyrhina species have rounded heart-shaped pectoral fin discs with short, blunt snouts.
Amu Darya sturgeon - The Amu Darya sturgeon or false shovelnose sturgeon is a species of fish in the Acipenseridae family.
Amu-darya stone loach - Amu-Darya stone loach is a species of ray-finned fish in the genus Nemacheilus.
Amur ide - Amur Ide is a species of ray-finned fish in the genus Leuciscus.
Amur pike - Like other pike, this species is prized for sport fishing, but is not generally found outside its native range.
Amur sturgeon - The Amur sturgeon is a species of fish in the Acipenseridae family.
Anabarilius polylepis - Anabarilius polylepis is a species of ray-finned fish in the Cyprinidae family.
Anaecypris hispanica - Its natural habitats are rivers and intermittent rivers.
Anamalai loach - Anamalai Loach is a species of ray-finned fish in the genus Homaloptera.
Anaspidoglanis akiri - Anaspidoglanis akiri is a species of catfish of the family Claroteidae.
Anaspidoglanis boutchangai - Anaspidoglanis boutchangai is a species of catfish of the family Claroteidae.
Anatolian loach - Seminemacheilus lendlii is a species of ray-finned fish in the Balitoridae family.
Ancharius griseus - Ancharius griseus is a species of catfish of family Ariidae.
Anchoveta - Anchoveta are pelagic fish in the southeastern Pacific Ocean, and are regularly caught on the coasts of Peru, and Chile.
Anchovy - Anchoa hepsetus is a species of fish in the Engraulidae family.
Anchovy - Anchoa lyolepis is a species of fish in the Engraulidae family.
Ancistrus claro - The type species is Ancistrus cirrhosus.
Ancistrus leucostictus - The type species is Ancistrus cirrhosus.
Angayukaksurak charr - The angayukaksurak char is a species of fish in the Salmonidae family.
Angel - The big-scale pomfret, Taractichthys longipinnis, is a pomfret of the family Bramidae, found in the Atlantic ocean, at depths down to 500 m.
Angel fish - The spotted ratfish has a very distinct appearance compared to unrelated fish species.
Angel fish - Juveniles are dark blue with electric blue and white rings; adults have yellow and blue stripes, with black around the eyes.
Angel fish - The ringstraked guitarfish is a species of fish in the Rhinobatidae family.
Angel ray - Identification of the species is based on the following characters: line of thorny denticles along the midback is absent; no prominent ocelli on the pectoral fins; pelvic fin tips reach or surpass the first dorsal fin origin; dorsal fins angular in shape; caudal fin angular, especially dorsally; width across pelvic fin tips / total length is greater than 1.
Angel shark - Reproduction is ovoviviparous.
Angel squeaker - The polka-dot African catfish is mostly nocturnal.
Angelfish - Argentina elongata is a herring smelt of the family Argentinidae, found around southern Australia, and New Zealand, at depths of between 100 and 600 m .
Angelfish - The adult Queen angelfish overall body color can be described as blue to bluegreen with yellow rims on its scales.
Angelfish - The adult Rock Beauty angelfish's overall body color can be described as yellow in the facial region of the body with blue towards the tail end of the fish.
Angler - It has a very large head which is broad, flat and depressed; the rest of the body appears to be a mere appendage.
Angler catfish - Chaca bankanensis is a species of catfish of the family Chacidae.
Angora loach - Angora loach is a species of ray-finned fish in the Balitoridae family.
Angra labeo - Labeo angra is a fish in the genus Labeo.
Angular rough shark - The angular roughshark, Oxynotus centrina, is a sleeper shark of the family Dalatiidae.
Annual Tropical Killifish - The Splendid Pearlfish is a species of fish in the Rivulidae family.
Antarctic silverfish - The Antarctic Silverfish, Pleuragramma antarcticum is a member of the suborder Notothenioidei of the Perciform fishes.
Antarctic toothfish - Though sometimes called the Antarctic Cod, the Antarctic toothfish is quite unrelated to a cod.
Antenna codlet - Bregmaceros atlanticus is a species of fish in the Bregmacerotidae family.
Anthias salmopunctatus - Anthias salmopunctatus is a species of fish in the Serranidae family.
Antipodocottus galatheae - Antipodocottus galatheae is a sculpin of the family Cottidae, found on the continental shelf around New Zealand.
Antipodocottus megalops - Antipodocottus megalops is a sculpin of the family Cottidae, found on the continental shelf around New Zealand, at depths of between 400 and 600 m.
Aphanius chantrei - The dislisazancik baligi is a species of fish in the Cyprinodontidae family.
Aphanius sirhani - In 1983 Aphanius sirhani was described for the first time as a new species of Killifish.
Aphanius vladykovi - This species is a close relative of Aphanius sophiae, but characterised by a higher lateral line scale counts and by its color pattern: males have darker coloration on the dorsal fin and a lighter one on the anal fin.
Apistogramma barlowi - This is a mouthbrooder, which is unusual in the genus Apistogramma.
Apistogramma eremnopyge - This is a small cichlid, 26-35 mm standard length which can be easily distinguished from its congeners by the presence of a prominent dark blotch on the lower part of the caudal peduncle in both sexes.
Apistogramma nijsseni - Apistogramma nijsseni is a species of cichlid fish, endemic to the black water habitats in the Carahuayte river drainage, South America.
Apistogramma panduro - Apistogramma panduro is a benthopelagic freshwater fish from South America.
Apistogramma regani - Apistogramma regani is a species of South American dwarf cichlid.
Apistogramma taeniata - Apistogramma taeniata is a benthopelagic freshwater fish from South America.
Apistogramma viejita - Apistogramma viejita is a dwarf cichlid in the subfamily Geophaginae.
Apogon brevispinis - This species grows to over 60 mm in length with five broad longitudinal brown stripes alternating with five much narrower whitish stripes and a dark mark on the caudal peduncle.
Apogon regula - This species grows up to 40 mm in length with five broad longitudinal yellowish-brown stripes alternating with four much narrower whitish stripes.
Apomatoceros alleni - Apomatoceros alleni is a species of catfish of the family Trichomycteridae, and the only species of the genus Apomatoceros.
Aposturisoma myriodon - The generic name derives from Greek apo- meaning "outside", German sturio meaning "sturgeon" and Greek soma meaning "body"; the whole referring to its outwardly similar appearance to a sturgeon.
Apristurus albisoma - Apristurus albisoma, the white-bodied catshark, is a cat shark of the family Scyliorhinidae.
Apristurus ampliceps - The roughskin catshark, Apristurus ampliceps, is a species of fish in the Scyliorhinidae family.
Apristurus australis - The pinocchio catshark, Apristurus australis, is a species of fish in the Scyliorhinidae family.
Apristurus internatus - Reproduction is oviparous.
Apron ray - The apron ray, Discopyge tschudii, is a small electric ray in the numbfish family, Narcinidae, known for being able to generate electric shocks for defense.
Apteronotid eel - They are nocturnal, but they are weakly electric fish and use an electric organ and receptors distributed over the length of their body in order to locate insect larvae.
Apteronotus galvisi - Apteronotus galvisi is a species of ghost knifefish that was first described in a 2007 scientific paper.
Apteronotus leptorhynchus - The brown ghost knifefish, Apteronotus leptorhynchus, is a species of weakly electric knifefish in the family Apteronotidae.
Arabian angelfish - The Arabian Angelfish is a fish well known for its use in saltwater aquariums, even though it tends to be a shyer specimen compared to the other, sometimes aggressive, angelfish.
Arabian carpetshark - The Arabian carpetshark is a species of carpet shark in the family Hemiscylliidae, inhabiting coral reefs and other shallow coastal habitats from the Persian Gulf to India.
Arabian catshark - The Arabian catshark, Halaelurus alcockii, is a cat shark of the family Scyliorhinidae.
Arabian sillago - The shortnose whiting belongs to the genus Sillago, a subdivision of the smelt whiting family Sillaginidae.
Arabian smooth hound - The Arabian smooth-hound, Mustelus mosis, is a houndshark of the family Triakidae, found on the continental shelves of the tropical western Indian Ocean from the Red Sea and East Africa to the Maldives, India and Sri Lanka between latitudes 30° N and 7° N, at depths of between 20 and 250 m.
Aral spined loach - Sabanejewia aurata is a species of ray-finned fish in the Cobitidae family.
Arapaima - Arapaima can reach lengths of more than 2 m , in some exceptional cases even more than 2.
Arawana - This species is found in the Amazon River basin and in the Rupununi and Oyapock Rivers in South America as well as in still waters in Guyana.
Arbroath smokie - The haddock is easily recognized by a black lateral line running along its white side and a distinctive dark blotch above the pectoral fin, often described as a "thumbprint" or even the "Devil's thumbprint" or "St.
Arc-eye hawkfish - Paracirrhites arcatus is a Hawkfish from the Indo-Pacific.
Archbishop - Reproduction is ovoviviparous, with two to nine pups per litter.
Arctic bonito - It is a streamlined, fast-swimming pelagic fish, common in tropical waters throughout the world, where it inhabits surface waters in large shoals , feeding on fish, crustaceans, cephalopods and mollusks.
Arctic cisco - Arctic cisco is an anadromous species of freshwater whitefish that inhabits the Arctic parts of Siberia, Alaska and Canada.
Arctic cisco - The omul has traditionally been regarded as a subspecies of the Arctic cisco Coregonus autumnalis.
Arctic cod - It is widely distributed in the western part of the Arctic basin, also the northwest and northeast coasts of Greenland.
Arctic cod - Navaga fish usually occur at shallow depths, along shores with soft bottoms, close to the ice and on the continental shelf.
Arctic grayling - Several life history forms of Arctic grayling occur: fluvial populations that live and spawn in rivers; lacustrine populations that live and spawn in lakes; and potamodromous populations that live in lakes and spawn in tributary streams.
Arctic skate - The Arctic skate is about a meter long and is gray-brown with large dark spots.
Arfak rainbowfish - The Arfak rainbowfish is a species of fish in the Melanotaeniidae family.
Argentina georgei - Argentina georgei is a species of fish in the Argentinidae family.
Argentine - Argentina striata is a species of fish in the Argentinidae family.
Argentine anchoita - By biomass, it is the largest fish resource of the southwest Atlantic Ocean .
Argentine angelshark - Reproduction is ovoviviparous, with 7 to 11 pups in a litter.
Argentine torpedo - The Argentine torpedo is a species of fish in the Torpedinidae family.
Argus skate - The argus skate is a species of fish in the Rajidae family.
Argustfish - Scatophagus argus belong to the scat family and occur in 2 basic color morphs which are called Green Scat and Ruby Scat or Red Scat.
Aried cat shark - Reproduction is oviparous.
Aristochromis christyi - This large predatory fish that endemic to Lake Malawi in East Africa.
Aristotle's Catfish - Aristotle's catfish is a species of fish in the Siluridae family.
Ariza labeo - Labeo alluaudi is fish in genus Labeo found in India, Nepal, Bangladesh and Pakistan.
Arizona trout - The Apache trout measures in length from 6 to 24 inches , and weighs between 6 ounces and 6 pounds .
Arkansas river shiner - Arkansas River Shiner is a species of ray-finned fish in the genus Notropis.
Armless flounder - The armless flounder, Neoachiropsetta milfordi, is a southern flounder, the only species in the genus Neoachiropsetta.
Armored catfish - The cascarudo , armored catfish, bubblenest catfish, hassar, or mailed catfish is a subtropical freshwater fish belonging to the Callichthyinae sub-family of the Callichthyidae family.
Armoured flathead - The armoured flathead or deepsea flathead, Hoplichthys haswelli, is a ghost flathead of the family Hoplichthyidae, found in the southwest Pacific Ocean, at depths between 140 and 700 m.
Arowana - Native to Southeast Asia, Asian arowanas inhabit blackwater rivers, slow-moving waters flowing through forested swamps and wetlands.
Arrow dragonet - Callionymus risso is a species of ray-finned fish in the genus Callionymus.
Arrow headed hammerhead shark - The winghead shark, Eusphyra blochii, is a species of hammerhead shark, family Sphyrnidae, named for the remarkably wide lobes on its head.
Arrow loach - Arrow loach is a species of ray-finned fish in the genus Nemacheilus.
Arrow-toothed grenadier - This species reaches a length of 31 cm.
Arrowhead dogfish - Arrowhead dogfish have extremely long angular snouts, no anal fin, small first dorsal and long rear dorsal spines, and pitchfork shaped dermal denticles.
Arrowtooth flounder - Arrowtooth flounder are members of the family Pleuronectidae, the right-eyed flounders.
Arrowtooth lizardfish - The arrowtooth lizardfish, Synodus doaki, is a lizardfish of the family Synodontidae, found in the indo-Pacific oceans, at depths of between 9 and 200 m.
Arroyo chub - The shape of the arroyo chub is somewhat chunky, with a deep body and thick caudal peduncle.
Arthurs paragalaxias - The arthurs paragalaxias is a species of fish in the Galaxiidae family.
Arulius barb - The arulius barb is a tropical freshwater fish belonging to the Puntius genus in the family .
Asabakarei - The dusky sole, Lepidopsetta mochigarei, is a flatfish of the family Pleuronectidae.
Ash Meadows poolfish - The common name of the genus Empetrichthys has since been changed from killifish to poolfish .
Ashy darter - The ashy darter is a species of fish in the Percidae family.
Asian cory - This fish has a semi-transparent body which may or may not have speckles.
Asian sheepshead wrasse - The Asian sheepshead wrasse is a species of fish in the Labridae family.
Asian sillago - The Asian whiting is a species of the genus Sillago, one of three divisions of the smelt-whiting family Sillaginidae.
Asoka barb - The Asoka Barb is a species of ray-finned fish in the Cyprinidae family.
Asp - Normally asps are between 10 to 80 centimeters in length, with some reaching 120 centimeters, and weighing up to 12 kg. Asps can be found in Germany, Sweden, Finland, Poland, Romania, Russia, Switzerland, the Netherlands and Belgium.
Asp-pike - The Pike Asp is a species of ray-finned fish in the Cyprinidae family.
Aspidoras depinnai - Aspidoras depinnai is a relatively recently discovered catfish.
Aspidoras fuscoguttatus - The fish will grow in length up to 4 centimeters .
Aspidoras lakoi - The fish will grow in length up to 4.
Aspidoras rochai - The fish will grow in length up to 4.
Aspistor luniscutis - Aspistor luniscutis is a species of catfish of family Ariidae.
Asprete - It was scientifically discovered and described in 1957 by the Romanian scientists M.
Assamese kingfish - Assamese Kingfish is a species of ray-finned fish in the genus Cyprinion.
Assiculus punctatus - The genus and species were first published by Sir John Richardson in an appendix to Volume 1 of John Lort Stokes' 1846 Discoveries in Australia.
Astatoreochromis vanderhorsti - It is found in Burundi and Tanzania.
Astatotilapia flaviijosephi - Astatotilapia flaviijosephi is a species of fish in the Cichlidae family.
Astatotilapia stappersii - Astatotilapia stappersii is a ray-finned fish species in the family Cichlidae.
Astatotilapia tweddlei - Astatotilapia tweddlei is a species of fish in the Cichlidae family.
Asterophysus batrachus - Asterophysus batrachus, the Gulper Catfish, is a species of catfish of the family Auchenipteridae.
Astrodoras asterifrons - Astrodoras asterifrons is the only species in the genus Astrodoras of the catfish family Doradidae.
Asymbolus rubiginosus - Asymbolus rubiginosus is a cat shark of the family Scyliorhinidae found only off West Australia, at depths of between 25 and 540 m.
Atelomycterus baliensis - Atelomycterus baliensis, is a catshark of the family Scyliorhinidae found only from the Indonesian island of Bali.
Athi elephant-snout fish - The Athi elephant-snout fish is a species of fish in the Mormyridae family.
Athi sardine - The Athi Sardine is a species of ray-finned fish in the Cyprinidae family.
Atka mackerel - The primary population of the fish is found off of the Sea of Okhotsk.
Atka mackerel - The Atka mackerel was originally described under the genus Labrax, but has since been moved to Pleurogrammus.
Atlantic angel shark - Reproduction is ovoviviparous, with up to 25 pups in a litter born in the summer.
Atlantic blue marlin - Marlin are distributed throughout the Atlantic's tropical and temperate waters; they are more populous in the western parts.
Atlantic bluefin tuna - Atlantic bluefin tuna are capable of reaching well over a thousand pounds in weight, and rival the black marlin and blue marlin as some the largest known bony fish.
Atlantic bumper - The Atlantic bumper is best recognized by its profile, the bottom being much more curved than the top.
Atlantic cod - In the western Atlantic Ocean cod has a distribution north of Cape Hatteras, North Carolina, and round both coasts of Greenland; in the eastern Atlantic it is found from the Bay of Biscay north to the Arctic Ocean, including the Baltic Sea, the North Sea, areas around Iceland and the Barents Sea.
Atlantic croaker - Atlantic croaker live in coastal waters from Maine to Florida.
Atlantic cutlassfish - Largehead hairtails can grow to over 2 m in length; the largest recorded weight is 5 kg and the oldest recorded age is 15 years.
Atlantic flyingfish - Like many other flyingfishes, the Atlantic flyingfish has a cylindrical body, and large tail and pectoral fins that it uses for flight.
Atlantic lizardfish - The Atlantic lizardfish which is also known as Synodus saurus is a type of lizardfish or Synodontidae that primarily lives in the Eastern Atlantic
Atlantic mud shark - The bluntnose sixgill shark is a member of the Hexanchidae family.
Atlantic needlefish - Strongylura marina, also called the Atlantic needlefish is a common top water resident of marinas and other areas with minimal current this fish is in the family Belonidae.
Atlantic porkfish - The Porkfish, Anisotremus virginicus is a Grunt from the Western Atlantic.
Atlantic rainbow smelt - The rainbow smelt, Osmerus mordax, is an anadromous species of fish inhabiting rivers and coastal areas of North America from New Jersey to Labrador on the east coast and from Vancouver Island to the Arctic Ocean on the west coast.
Atlantic sailfish - Tests in the 1920s estimated that they were capable of short sprints of up to 111 kilometres per hour, however, a more conservative estimates of 37 to 55 kilometres per hour are more widely accepted .
Atlantic saury - The fish feeds on zooplankton and fish larvae, and is hunted by tuna, marlin, bluefish and cod.
Atlantic sawtail cat shark - Reproduction is oviparous.
Atlantic scombrops - They have two dorsal fins and are notable for scales covering the soft parts of the dorsal and anal fins.
Atlantic shad - The American shad or Atlantic shad, Alosa sapidissima, is a species of anadromous fish in family Clupeidae of order Clupeiformes.
Atlantic shadefish - A.
Atlantic sharpnose shark - The Atlantic sharpnose shark, Rhizoprionodon terraenovae, is a requiem shark of the family Carcharhinidae, found in the subtropical waters of the western Atlantic Ocean between latitudes 43° N and 25° S, at depths of from 10 to 280 m.
Atlantic spadefish - Due to their reputation as strong fighters, they are popular game fish, especially during the summer months when they are most active.
Atlantic stingray - The Atlantic stingray, Dasyatis sabina, is a species of stingray in the family Dasyatidae, common along the Atlantic coast of North America from Chesapeake Bay to Mexico and also found in brackish and freshwater habitats.
Atlantic tarpon - In appearance, it is greenish or bluish on top, and silver on the sides.
Atlantic thread herring - It has a dark blue-gray back, silvery sides, a white belly and a small head.
Atlantic threadfin - The Atlantic threadfin, Polydactylus octonemus, is a threadfin native to subtropical and temperate waters of the western Atlantic Ocean and the Gulf of Mexico.
Atlantic tripletail - The Atlantic tripletail is the only fish in the Lobotidae family that can be found in the Atlantic Ocean.
Atlantic white marlin - Average size is 45 to 65 lbs , with females reaching relatively larger sizes.
Atlantic whitefish - The Atlantic whitefish is a freshwater salmonid fish inhabiting the northwestern Atlantic ocean around the Canadian province of Nova Scotia, as well as some freshwater lakes within Nova Scotia.
Atlantic wreckfish - Atlantic wreckfish are deep-water fish and can be found on the ocean bottom at depths between 40 and 600 m , where they inhabit caves and shipwrecks .
Atoll butterflyfish - It grows to a maximum of 12.
Atoyac chub - Atoyac Chub is a species of ray-finned fish in the genus Notropis.
Auchenipterichthys coracoideus - Auchenipterichthys coracoideus is a species of catfish of the family Auchenipteridae.
Auchenipterichthys longimanus - Auchenipterichthys longimanus is a species of catfish of the family Auchenipteridae.
Auchenipterichthys punctatus - Auchenipterichthys punctatus is a species of catfish of the family Auchenipteridae.
Auchenipterichthys thoracatus - Auchenipterichthys thoracatus is a species of catfish of the family Auchenipteridae.
Aulonocara aquilonium - Aulonocara aquilonium is a species of fish in the Cichlidae family.
Aulonocara brevinidus - Aulonocara brevinidus is a species of fish in the Cichlidae family.
Aulonocara brevirostre - Aulonocara brevirostre is a species of fish in the Cichlidae family.
Aulonocara chizumulu - It is endemic to Malawi.
Aulonocara Fort Maguire - It is found in Malawi and Mozambique.
Aulonocara gertrudae - Aulonocara gertrudae is a species of fish in the Cichlidae family.
Aulonocara stonemani - Aulonocara stonemani is a species of fish in the Cichlidae family.
Aulonocranus dewindti - Aulonocranus dewindti is a species of fish in the Cichlidae family.
Aurora trout - The brook trout is native to small streams, creeks, lakes, and spring ponds.
Australian anchovy - The Australian anchovy feeds on plankton.
Australian angelshark - Reproduction is ovoviviparous, with up to 20 pups in a litter.
Australian bass - Australian bass are closely related and very similar in appearance to estuary perch .
Australian blacktip shark - The blacktip shark, Carcharhinus limbatus, is a species of requiem shark, family Carcharhinidae.
Australian bonito - The Australian bonito, horse mackerel or little bonito, Sarda australis, a fish of the family Scombridae, is found around eastern Australia and New Zealand in depths to about 30 m , in open water.
Australian bull ray - It is found in the southern waters of Australia from Jurien Bay, Western Australia, around the southern coast and Tasmania and up the east coast as far as Moreton Bay, south Queensland.
Australian grey smooth-hound - The Mustelus ravidus is a type of shark native to the Pacific Ocean and Indian Ocean waters surrounding Australia.
Australian lamprey - Adult short-headed lampreys live at sea and are parasites on other fish.
Australian marbled catshark - The Australian marbled catshark, Atelomycterus macleayi, is a catshark of the family Scyliorhinidae found in the eastern Indian Ocean endemic to Western Australia between latitudes 12° S and 21° S, from the surface to 245 m.
Australian numbfish - The coffin ray, Hypnos monopterygius, is a species of small, unusually shaped electric ray endemic to Australia.
Australian rainbowfish - The rainbowfishes are a family of small, colourful, freshwater fish that are found in northern and eastern Australia and New Guinea and in the Southeast Asian Islands.
Australian reticulate swellshark - Once thought to be the same species as the reticulated swellshark of Vietnam and Hainan, the Australian reticulate swellshark was described as a separate species by William White and David Ebert in a 2008 Commonwealth Scientific and Industrial Research Organisation publication.
Australian river gizzard shad - A deep bodied, laterally compressed fish with a blunt snout.
Australian ruff - In Victoria and South Australia, it is commonly called the "Tommy Ruff".
Australian salmon - It is known by a number of other names:
Australian sharpnose shark - The sliteye shark, Loxodon macrorhinus, the only member of the genus Loxodon, is a shark of the family Carcharhinidae, found in the tropical waters of the Indo-West Pacific oceans between latitudes 34° N and 30° S, from depths of 7 to 100 m.
Australian sharpnose shark - The milk shark, Rhizoprionodon acutus, is a species of requiem shark, family Carcharhinidae, whose common name comes from an Indian belief that consumption of its meat promotes lactation.
Australian smelt - Widely distributed through the south eastern part of the Australian mainland.
Australian spotted catshark - The Australian spotted catshark, Asymbolus analis, is a cat shark of the family Scyliorhinidae found only around Australia between latitudes 32° S and 38° S, at depths of between 10 and 180 m.
Australian spotted mackerel - The Australian spotted mackerel, Scomberomorus munroi, is a species of fish in the family Scombridae.
Australian stinkfish - The Australian stinkfish is a species of ray-finned fish in the genus Callionymus.
Australian swellshark - The Australian swellshark or draughtboard shark is a species of catshark, family Scyliorhinidae, endemic to southern Australia.
Australian weasel shark - The Australian weasel shark, Hemigaleus australiensis, is a weasel shark of the family Hemigaleidae, found in the tropical eastern Indian Ocean to the Western Pacific including Australia, at depths of between 12 and 170 m.
Australian whiting - The King George whiting is the only species nested in the genus Sillaginodes, which itself is in the family Sillaginidae, containing all the smelt whitings.
Axelrod's rainbowfish - Axelrod's rainbowfish is a species of fish in the Melanotaeniidae family.
Ayarnangra estuarius - A.
Ayu - The name "sweetfish" is due to the sweetness of its flesh.
Azores dogfish - The Azores dogfish, Scymnodalatias garricki, is a very rare sleeper shark of the family Dalatiidae.
Azov shad - Alosa tanaica is a species of ray-finned fish in the genus Alosa.
Azure demoiselle - Chrysiptera hemicyanea, also known as Azure Damselfish or half-blue damselfish is a popular saltwater aquarium fish from the Indo-Pacific.
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