yesterday i went to petco and saw this clown knife, it had a different pattern compared to the normal spots this one has vertical stripes, so i figured hey it might be a royal, so i came home googled royal clown knifes and now im pretty happy since i saved money=) but this little guys like 4 inches and i was wondering should i try bloodworms and pellets/crumbles or smaller krill or does it not matter?