:bawling::bawling::bawling:i have a purple tang and its color is very dark. from what i hear this could be many things. i dont think its food because i feed my fish very well. i belive its the tank i dont have a bunch of live rock and i dont have a great skimmer either. all my other fish are bright and colorfull. i plain on adding alot more rock more sand and a better skimmer. i dont like to see him so dark. what do you guys think i should do. catch the tang when i add more rock. or leave him in and hope he gets brighter.