| Re: Chocolate Tang Question A 30 gal tank is way too SMALL for 3 Tangs ! They need room to move and keeping them in tight quarters like you are is going to lead to aggression, stress, disease, and stunted growth. It's possible that it was an inflicted injury or a bacterial infection. What are you using for filtration ? If given proper water parameters it should heal if not then you will need a QT and treat him with an antibiotic.
__________________ Robert  My Cube “A spirit is manifest in the laws of the Universe—a spirit vastly superior to that of man, and one in the face of which we with our modest powers must feel humble.” Albert Einstein |