Thanks, all.
I had the thought - "that looks just like a miniature steelhead"...but I thought "wait, isn't a steelhead just an ocean-going rainbow ? It would look like every other rainbow until it hits the sea, no ?"
I didn't (know I should) pay attention to the tail, I was going by color.
Thing is, I can only recognize a fish once I've caught one and had someone tell me what it is. Then if I catch another I have a pretty good idear of what it is.
I'm pretty sure I'll be able to spot a bass, but what kind... same thing with a catfish.