1 of >50 large (just over length of mink) fish in ones/twos/threes spread out on the bottom of the river, facing upstream but not moving forward, apparently mating behavior.. pictures of them are all awful (extremely sunny day, no polarization filter on camera), but visually they were mottled olive/ochre & dark brown on the dorsum, dark brown/blackish stripe from snout to tail along the side, and ochre/olive below the dark stripe. There may have been some pink in the lower part near the tail. Salmonid shape and "salmon spawning" general look