yellow tang is sick.
:sad: the pink spots on both sides of his tail look like bruises. i have 40 gallon fish tank. just did water change, 25%. fish doesn't pick on him. i have clown fish, lawn mover blenny, 5 emerald krabs,one sifting star, and of cause the tang. he still is not eating. he tryes to get my clown fish to clean him, because every cleaner shrimp i buy dies before an attempt to clean my yellow tang. out of corals i have pollips, which haven't been comming out last few days, bubble coral, and grape coral, those two look good. i just started with corals, but i had my yellow tang for 2 years. all the parameters look fine. blenny and clown look good and eat. it's possible that there is another problem on top of coral sting. i really don't want him to die, but i have no idea what to do.