My clown fish has somthing ( poop ) hangging from him. The cleaner shrimp picked some off so its shorter now. He has been lying down on my zoos and has been swimming slowly. The water test is fine and he is in a 20 gallon with corals and 1 six line wrasse. The wrasse and him get anlong so well! Please let me know if you have any idea whats wrong thanks! Picture posted as well