so we just got a hippo tang yesturday, the color looked wonderful! today, we noticed that its top fin is swollen. like a really thick mohawk. (not quite sure how to describe it! sorry!) i have been trying to take pics of it but he moves too fast and into the rocks! ugh i will keep trying. in the mean time any thoughts? maybe sick? or something? we have a 6 line wrasse, scooter, shrimp, crabs, anenomes. nothing really in the tank that would hurt him. although, the six line is goin to a new home, he has been a lil bit too aggressive with our scooter, we actually just lost one the other day because he was messing with him. but he might have just been ill cuz he wouldnt eat. and got really skinny. the other one is thriving and we've trained them to eat from us. so not sure but quagmire (6 line) is going to our neighbor next week. just in case!