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Active member
I've had a Convict Tang in my 180g reef for several months. Since I put it in there, it has never been a great eater. It will not even touch pellet food, Cyclopeze, or Mysis. It literally swims right past the food. The only thing it will eat is Nori. Even though it eats the Nori, it still doesn't seem to be getting fatter. It does swim around the tank and pick at the Live Rock and sand and appears healthy, but it is extremely thin. I'm thinking there is some sort of internal parasite. What can I do to help the fish?