This species can be separated from its relatives by the scales which are present
only on its side, behind the pectoral fin tip. The longear eelpout also has small
pelvic fins, an underslung mouth, a lack of pores around the mouth, a crest on
its chin, and a single lateral line that runs along the middle of the body. Its
tail is small, but otherwise the body shape is typical of most eelpouts: the head
is heavily built with the eyes near the top of the head, the pectoral fins are
large and fan-like, while the dorsal and anal fins run along most of the length
of the body. The overall colour is light grey-brown with the belly darker than
the rest of the body and there are usually 4 to 8 light bars on the upper flank
and dorsal fin. This species does not grow larger than 52 cm.
The longear eelpout has been found in the Canadian Beaufort Sea, off Ellesmere
Island, and in the North Atlantic. It also occurs in the Barents and Kara seas.
Longear eelpouts have been caught at depths ranging from 335 to 610 m in temperature
ranging from -0.6°C to 0.3°C. It prefers mud bottoms, where worms, crustaceans
and fishes can be hunted. Reproduction occurs in June when 300 eggs are scattered
over the bottom by a single female.