Ok so I just got a 55 gallon freshwater tank and I am looking to stock the tank, I want a fish that doesn’t take up much space, seeing as I would like it to be fine with tank mates, but at the same time I would like a relatively large fish (around 2-3 inches) that is aggressive enough to eat feeder fish. The fish would also not be aggressive enough to want to kill tankmates. I don’t know if this magical fish exists, but if it does I would love for someone to inform me, thanks!