A few years back, Kdan and I witnessed a 7lb brown eat a small brown trout, 10 inch, and attempt to eat a much larger rainbow, probably 14 inch, all in the same day. He would grab them from the side and hold their gills closed while they drowned. He would then try to swallow head first. We nicknamed him the "fish eater brown". we caught and released him 4 times that season.