so for about a month now, my jack demsey has had a large, dropsy looking growth. His stomach looks like a balloon that's about to pop, but doesn't display classical signs of dropsy. He can swim fine, although he mostly stays at the bottom of the tank and hides in his log. he doesn't seem to be eating either. i've tried to feed him peas in the hopes that he was just constipated but he won't eat them. i've also noticed that there is a white, rock-like object protruding from his rectum (tried to use the best language with that) that's been there for a couple weeks. please help me figure something out i don't want to lose him