Reeferdude, are you saying your shark is sick now? He is saying you should've left the shark alone. If you cut the shark out and it still had the yolk attatched it was probably to early. Your lfs guy sounds like he is in it for the money, not the love of the hobby. I'd take whatever he says with a grain of salt. You also will want to take the damsels and trigger out of your shark tank, or they will more likely than not kill him. Bo