Gephyroberyx japonicus
Gephyroberyx japonicus, the big roughy or blueberry roughy, is a species of fish in the family Trachichthyidae. It is endemic to the northwest Pacific off Japan, Taiwan and Hawaii, and can be found at depths between. It can reach in length. Based on broadly overlapping morphological features it is sometimes considered a synonym of G. darwinii.
It is sometimes seen in deep-sea exhibits in public aquariums and it has spawned in captivity.