That would be better if you had all those dither fish. I had the pike and ATF at the same exact sizes and the pike beat the crap out of the ATF as soon as he laid eyes on it. ATF had deep gouges on both sides and soon after, he caught a BAD case of ick. He is fine now, but can still see the scars. If the ATF were maybe 2x the size, they might be ok.....or roles will reverse...