Taking up nearly a third of its head, the eyes of
this fish are among the largest in the sculpin family. This feature, as well as
a larger number of rays in the pectoral fins, distinguishes the bigeye sculpin
from the moustache sculpin, which it closely resembles. The body length of the
bigeye sculpin averages 15 cm in length.
Only a very few specimens of this fish have been collected, so its distribution
is poorly known. It occurs off the Labrador coast and occasionally in Ungava Bay.
There are also reports from the east and west coasts of Greenland where it was
found at a depth of 230915 metres indicating that this fish prefers very
deep, cold waters.