Opalfish

The opalfish, Hemerocoetes monopterygius, is a duckbill of the genus Hemerocoetes, found only around New Zealand, at depths of between 5 and 200 m.

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The Opalfish lives in the demersal, marine environment.

The opalfish, Hemerocoetes monopterygius, is a duckbill of the genus Hemerocoetes, found only around New Zealand, at depths of between 5 and 200 m. Their length is between 10 and 25 cm. More

The opalfish, Hemerocoetes monopterygius, is a duckbillPercophidae Duckbills are a family, Percophidae, of perciform fishes.They are found in tropical and subtropical waters of the Atlantic Ocean and Indian Oceans and in the southwestern and southeastern Pacific Ocean.... More

It feeds mainly on blue cod, red cod, opalfish, sprat and squid. In spring 2004, disease killed off 60% of yellow-eyed penguin chicks on the Otago peninsula and in North Otago. More

Opalfish and red cod make up more than half of the penguins' diet, but the ecology of these fish is poorly understood. This underscores the need for better understanding of both prey and predator when trying to conserve an endangered species, McKinley says. More

7 Opalfish: Facts, Discussion Forum, and Encyclopedia Article The opalfish, Hemerocoetes monopterygius, is a duckbill. Percophidae ... of the genus Hemerocoetes. Hemerocoetes. Hemerocoetes is a genus of Percophidae fishes. ... www.absoluteastronomy. More

cod, red cod, opalfish, sprat and squid. Whether or not yellow-eyed penguins are colonial nesters has been an ongoing issue with penguin people in New Zealand. Most Antarctic penguin species nest in large high density aggregations of birds. More

Common names

Kohikohi in Maori (te reo Māori)
opal fish in English
Opalfish in English
单鳍双犁鱼 in Mandarin Chinese
單鰭雙犁魚 in Mandarin Chinese

Order : Perciformes
Family : Percophidae
Genus : Hemerocoetes
Species : Hemerocoetes monopterygius
Authority : Schneider, 1801