I avoided this investigation, somewhat against the request of my advisor to include interspecific competition with rainbow trout. We had about 25 hatchery rainbows in the lab as well, but they were much bigger and the size difference was too much for me. My prediction, however, is that they would be more aggressive in a mixed community. They do overlap with stocked and wild spawning rainbows and browns in many streams around here, but their numbers are much stronger where they are the only salmonid present. That might be my next tank, when these trout do eventually run their course, I have thought about growing out some rainbow, brown, and brook fry and see how they interact.
