The opalfish, ''Hemerocoetes monopterygius'', is a duckbill of the genus ''

Hemerocoetes ''Hemerocoetes'' is a genus of duckbill fishes. References Percophidae Extant Rupelian first appearances Marine fish genera Taxa named by Achille Valenciennes Rupelian genus first appearances {{Perciformes-stub ...

'', found only around New Zealand, at depths of between . Their length is between .

Gallery

File:Hemerocoetes monopterygius (Opalfish).gif, Drawing by Dr Tony Ayling File:Hemerocoetes_monopterygius_2022-09_(3).jpg, An opalfish surrounded by shells

References

* * * Tony Ayling & Geoffrey Cox, ''Collins Guide to the Sea Fishes of New Zealand'', (William Collins Publishers Ltd, Auckland, New Zealand 1982) *

Wade Doak Wade Thomas Doak (23 February 1940 – 12 September 2019) was a New Zealand marine conservationist, scuba diver, photographer and filmmaker. Born in Christchurch, Doak was educated at Christchurch Boys' High School from 1954 to 1958. He began d ...

, ''A Photographic Guide to Sea Fishes of New Zealand'', (New Holland Publishers (NZ) Ltd, Auckland, New Zealand 2003) {{Taxonbar, from=Q2754344 Percophidae Endemic marine fish of New Zealand Fish described in 1801 Taxobox binomials not recognized by IUCN