The twohorn sculpin (Icelus bicornis) is an Arctic benthic fish species of the order Scorpaeniformes.

The caudal fin is slightly rounded and has dark, vertical bars and a black spot at the base.

In Canada, this fish occurs as far north as the northern tip of Ellesmere Island.

Elsewhere, it is distributed along Norwegian coasts up to Spitzbergen and the Barents Sea (as far north as 82 degrees), and west to Iceland and Greenland.

It is typically found at depths between 40 and 180 metres on sand, mud or rocky substrates.