I have a male betta that I have had for about 7 months. He has always been spunky and energetic, and a really good eater. About 10 days ago our temps starting dropping (outside) and my apartment was a little cooler than usual, and the tank temp dropped. Romeo was blowing his little bubbles like crazy, seemed happy and no issues, but in the last 7 or 8 days he has stopped eating, only one tiny bite in about the last 4 days, and he is very lethargic, and his color has really faded. I bought him a new, bigger tank, conditioned the water and installed a heater that is keeping the water at about 78-79 degrees (he has always been between 77 and 80). Its been 3 days in the new pad, still no joy and no eating. He just lists around, not moving hardly any of his fins, and the two side fins that he usually poofs out (right behind his gills) he keeps tucked together, (like a person holding their fingers together) and flaps them around. When he isn't hovering near the surface, he will swim to the surface, take a breath then slowly float down about half way, then repeat. He has started blowing a few bubbles today, but they have no pattern. Should I give him more time to adjust to being back in the correct temp water and having a new tank? I have a friend who said his betta used to go into a kind of hibernation if his tank got too cold. Anyone ever hear of that, or was he trying to make me feel better? Please help, thank you so much!!!