I've had my firebelly newt for almost two years now. I feed him frozen foods: bloodworms, mysis shrimp, and glassworms. I feed him approximately every 5 days, sometimes 6, with tweezers until he swims away. We've had a good thing going. But he refused to eat yesterday (mysis shrimp) and again today (bloodworms- his favorite!). Nothing's changed in his environment. I guess I'm gonna change the filter media, that's all I can think of. He doesn't look thin at all, so I'm worried it might be some kinda bloat. :/