The lumpfish family includes a number of fish whose
bodies are short, compressed, and generally solid looking. The leatherfin lumpfish
is no exception. It is a small (no more than 8 cm in length), stout-bodied fish
that has much of its head and body covered in small bony tubercles. The sucking
disc (modified pelvic fins) is smaller than that of the Atlantic spiny lumpfish
and is often used to distinguish between the two species. The head is bluntly
rounded but large, representing 60% of the total body length. The rest of the
body slopes quickly down to a narrow caudal peduncle. The fins are generally short
and heavily built.
This species is commonly found in the stomachs of cod caught in Ungava Bay. However,
specimens have also been found in Hudson Bay, off the Labrador coast, and in the
Barents, Kara, and Nordenskiold seas.