These were really small and in schools.
This Dolly Varden was in spawning colours, captured by electrofishing as part of fisheries research in the upper Peel Watershed.
ROV Phantom
From Chu & Leys (2010)
I am stumped on this one. The otter caught and is eating some kind of long, slender fish or eel. iNat wants to call it a gunnel, but as far as I can find, gunnel are much smaller. This fish, judging from the size of the otter (~1 meter), must be conservatively 60-80 centimeters long.