dont know what this is. I found it up in interior Alaska about 30 miles north of the arctic circle inside a flooded canoe on a lake shore. i remember it was about 3 inches in length.
At first glance, I think that might be a young-of-the-year Ling Cod, but I don't know anything about their nesting/spawning habits to know if that's consistent w/where they'd be found. I'd go with Tony's opinion over mine.
I'd compare it to Alaska Blackfish, looks about right at a glance
Based on the location, I'd say blackfish is your best bet
Burbot(x), 100 species(36), Greater Redhorse(), Grass Pickerel(x), saltwater species(x), miscellaneous exotic()
That is Alaska blackfish, I'm fairly certain. Quite common in the Alaskan interior, I'm told. They're in the same family as pikes (Esocidae) and have the same basic fin and body structure -- as this fish does.