Recently, I moved my two male bettas into a divided ten gallon tank. The water is treated,filtered, heated, and each fish has their own place to hide and plenty of plants (I also got some marimo moss balls today and each fish now has their own).
When I got ready to feed them this morning, I noticed that my oldest male Edgar was acting a little strange. He just kept swimming in small, tight circles and wouldn't even swim to the surface to eat his pellets (when usually he sucks them right up). And when he did come to the surface for air, he was extremely skittish, which is very unusual for him as he's always been more relaxed.I started cutting back on feeding Edgar earlier this week because he looked slightly bloated and I fed him bits of a pea because my research said a pea would help (until I came here and found out the opposite). I'd thought that Edgar's bloating had passed because he'd been acting perfectly fine until this morning.
After doing a Google search, I thought he might have a swim bladder infection. He's currently in a single gallon tank so that he doesn't have to swim as far to get some air. I went out and bought some aquarium salt, a different brand of food, and Bettafix. My other betta is perfectly fine.
Is it normal for bettas to swim in circles if they have a bladder infection?
I read that a symptom of swim bladder was swimming on their side, but Edgar's not on his side when swimming.
Also, I'm afraid to keep him in the one gallon tank for too long because the water is not heated and my dorm is quite cold. Would Edgar be okay if I returned him to his five gallon now that his water has been treated with medicine?