Scopelogadus beanii

Scopelogadus beanii, or Bean's bigscale, is a species of ridgehead fish. It is named for Tarleton Hoffman Bean.

Description
Bean's bigscale is dark brown or black in colour, with a maximum length of 12.2 cm. It is one of the largest and deepest-dwelling ridgeheads. It has two dorsal spines, one anal spine, 10–11 dorsal soft rays and 7–9 anal soft rays. Its caudal peduncle (the tapered region behind the dorsal and anal fins where the caudal fin attaches to the body) is long. It has ridges of thin bones supporting deep mucous cavities on the head.

Habitat
Bean's bigscale is mesopelagic and bathypelagic, living at depths of up to 2500 m, and is common in the Atlantic Ocean, Pacific Ocean, Indian Ocean and Tasman Sea.

Behaviour
Scopelogadus beanii feeds on amphipods, polychaetes, jellyfish and mysids.