It's been awhile. My betta, Stanley, normally lives in a 1.5 gallon heated tank. I notice when he is in there he either floats at the top (he seems to have some type of SBD problem) or when he's not all floaty he's hiding under the rock arch. Whenever I get near he gets his stress stripe. He is also really pale. Still eats fine though.
Now, I have him in a little non-heated travel tank (.5 gallon) because I'm going home from school. I notice that he has his color back, he doesn't float, he doesn't get his stress stripe, poops like a champ, and he just seems happier. Since the tank is so small I clean it everyday. He has been in this tank for a little over a week.
Does a larger tank stress him out?
Should I just keep him in the small non-heated tank if he seems comfortable?