Gephyroberyx japonicus

Gephyroberyx japonicus, the big roughy or blueberry roughy, is a species of fish in the family Trachichthyidae.^[2] It is endemic to the northwest Pacific off Japan, Taiwan and Hawaii,^[2][3][4] and can be found at depths between 300 and 1,500 m (980–4,920 ft).^[5] It can reach 30–35 cm (12–14 in) in length.^[6] Based on broadly overlapping morphological features it is sometimes (e.g., by IUCN) considered a synonym of G. darwinii.^[1][4][7]

Gephyroberyx japonicus
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Trachichthyiformes
Family:	Trachichthyidae
Genus:	Gephyroberyx
Species:	G. japonicus
Binomial name
Gephyroberyx japonicus (Döderlein, 1883)
Synonyms
Trachichthys japonicus Döderlein, 1883

It is sometimes seen in deep-sea exhibits in public aquariums and it has spawned in captivity.^[6]