This a Bull Trout, the official fish of Alberta. (Aren't you glad you read this blog so you can know terrific trivia like that?) It is a protected species as its numbers have declined, and the way they teach us that we must catch and release this fellow is "No black, throw it back". It is the only trout here that has no black spots on its dorsal fin. It is also recognisable by the white leading edge on its lower fins. I think trout have such lovely, streamlined shapes and beautiful coloring (and no, I'm not being sarcastic, I really am a fan of fish). One of my favorite vacation memories is snorkeling in Parrotfish Bay in Mexico among all the fish there. Parrotfish are cute!
This is done in the Moleskine watercolor book with watercolor paints so I could get smooth washes for the fish and the water.