I thought he was just taking naps, but now he's spending 99% of the day on the floor of the tank sleeping. I can't bear to see him like this. I'd had him for 2 weeks, and he was veyr active. I dropped a sinking pellet in the tank to be sure he was getting enough food. I noticed his tummy was very dark after that, and then he started to be inactive. Tried to feed him a pea, but he's not interested. I put Melafix in the tank, which seemed to work almost immediately for my platy back in November. Any ideas? Ammo: 0, trite: 0 and Ph 7.2.