Description: Mottled Sculpin and other sculpin species have no scales, and its eyes are positioned on top of its rather large head. The way to tell mottled sculpin apart from other sculpin is the 3-4 dark saddles going over its back and down its sides. It has a mottled colour pattern of various shades of black, gray, and brown, with a lighter, cream-coloured belly. Another key identifying feature is a dark vertical bar at the base of its tail. The typical size ranges 75-90 mm.

Habitat: It is generally found in rocky rubble, gravel substrates with swift waters of creeks, headwaters, and small rivers.