My Betta, Fred, is a real piggy and he likes to eat a LOT. Well, I've gone and made him quite fat. He's been getting live blackworms and betta food and also a little bit of guppy food that he steals. I've been thinking it over and the best solution I can come up with to allow the rest of the gang to eat regularly but Fred to maintain his diet, is to buy one of those little floating fry tanks that you can stick in the tank and it floats around and let's the inhabitant still see everything in the tank but without giving access to and from the tank. I'm thinking I can put him in there 2 days a week for fasting. Would this be stressful to him? I'm kind of thinking it would be more stressful to seperate him completely. He's the only Betta in the tank but gets along well with the rest of the inhabitants.
I read that Bettas can become constipated. What does it look like if they are? His scales are fine and not sticking out like pine cones. Is there any way to identify Betta poop specifically so I can see if he's going as he should? (No, I'm not being silly, I mean it).

Ishy