I have had my Beta for a week and some days now. He's still in the little bowl i got from the pet shop and he won't eat any of his Beta bites. He moseys around the tank looking depressed and goes to the top occasionally for air. I think he's depressed. Today I bought a 5gal tank and set it up so that he can move in. I also bought him some freeze dried blood worms and he ate them all up. Does anyone know if it's the Beta bites? Is that why he wasn't eating? Also, do i need to put a heater in his tank? Please advice.