I dunno. The African butterflyfish have a lot of harmless spines that may make him not wanna eat them
I was referring to the senegals. They are really skinny compared to the butterfly fish. I got a 3-4" moke and it was pretty slim, like thinner than your pinky. I'm betting a 2-3" senegal is skinner. Since the fins on the butterfly tend to stick out more, they will look bigger to the bichir. It won't attempt eat something that looks too big.
