I was on a creek Today i have fished countless times and came into huge schools of fish I have never seen before. I hooked into several and they looked like an outline of a thin Kokanee while still in the water. All were around 5-6 inches long. Dark on top, almost black, with white belly and bright orange stripes on either side of their belly from the mouth all they way back to the Caudal fin. The scales were rough and sand papery and the mouth was closer to a carp than a trout. I saw thousands of these things throughout the day. Oh yah, caught my fare share of rainbows and cut bows too. What are they!?!? I googled like hell without success.