Hyperoglyphe antarctica

Hyperoglyphe antarctica, the Antarctic butterfish, bluenose warehou, deepsea trevally, blue eye trevalla, blue-eye cod, bluenose sea bass, or deep sea trevalla, is a medusafish of the family Centrolophidae found in all the southern oceans, at depths of between 40 and 1,500 m. Its length is up to about 140 cm, with a maximum published weight of 60 kg.

Hyperoglyphe antarctica
Drawing by Dr Tony Ayling
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Scombriformes
Family:	Centrolophidae
Genus:	Hyperoglyphe
Species:	H. antarctica
Binomial name
Hyperoglyphe antarctica (Carmichael, 1819)
Synonyms[1]
Perca antarctica Carmichael, 1819 Palinurichthys antarcticus (Carmichael, 1819) Diagramma porosa Richardson, 1845 Hyperoglyphe porosa (Richardson, 1845) Palinurichthys porosus (Richardson, 1845) Eurumetopos johnstonii Morton, 1888 Seriolella amplus Griffin, 1928

Antarctic butterfish have a dark blue body above and lighter blue below with large eyes (another name for this fish is big eye). Larger individuals have a bronze sheen along the flanks.

They can grow to 1.4 m in length and over 50 kg in weight. Studies have shown that fish between 62 and 72 cm are mature and range in age between 8–12 years respectively. Mature females can produce between 2 million and 11 million eggs prior to spawning.

Blue eye mainly feed on the tunicate Pyrosoma atlantica. However, they will feed on a range of fish, molluscs, squid and crustaceans, and are also cannibalistic.