It has been playing on my head way to much lately. So maybe you can all help me out? I am curious as to what gentle giants there are, every big fish I think of will eat smaller fish or just be plain aggressive. I am looking at possible fish they grow fairly large, but wont attack other fish. When I say large I mean 12 inches+. And when I say dont attack other fish I mean I accept them eating tinny (tetra size) fish but not fish of a good few inches.