About 1 month ago after the big rains, I was walking past mill creek bridge on Winter st N.E. in downtown Salem and I looked down and there was hundreds of huge fish just hanging out there. I've walked by this bridge for 10 years and never seen 1 fish, and here was hundreds. Here is the description; they were about 18-24" long with a bright yellow blaze along the side. Their head was catfish shaped a wide mouth. They ate all the algae in sight and would get in groups of 3 or 4 and wiggle rapidly together. They were the neighborhood mystery for about 2 weeks then in they disappeared. What was that about?