Help Please!! I have been searching for days to find someone to help me. My two leopard puffers are sick, I think. Well everything in my tank checks out. (30 gal). I have the two puffers and one moray eel in the tank. I thought at first it was the eel making them sick but I have sat there and watched them for hours and the eel stays far away from them. What's wrong with them is they are breathing heavily, and their bellies are black. The smaller of the two seems to try and feed itself to the eel, he goes right up to the mouth of the eel and sits there. Well the eel turns his head and leaves everytime. I thought also the lights in the tank might be bothering them so I took one of the two lights out to make it dimmer, no difference in behavior. I also thought maybe they didnt like the freeze dried krill so I've been feeding them frozen krill and brime shrimp. Now they are eating but still black. So please help if you can PLEASE!!!