The Coastrange Sculpin can be found in streams and lakes along the Pacific coast, from California north to the Aleutian Island chain of Alaska. These sculpins are dark brown, greenish, or grayish in colour along the back and sides, with two to four darker, saddle-like blotches and a lighter underside. They can be distinguished from other sculpins by the presence of only a single pore on the tip of the chin, the absence of palatine teeth, and the lack of a pronounced gap between the first and second dorsal fins.Coastrange Sculpin can live up to eight years, reaching a maximum length of 17 cm (6.7 in). They feed primarily on aquatic insects and other benthic invertebrates. Source: Fish Base (https://www.fishbase.se/summary/Cottus-aleuticus.html)