If you see poo he's not constipated. Try giving him fresh food, pellets might be messing up his system and a strictly pellet diet is the perfect recipe for swim bladder. Go buy some frozen bloodworms (Hikari) they're REALLY cheap (about 4.00) and they'll last forever feeding only one betta. Just break off a chunk from the package and defrost them in a shot glass with a splash of tank water. Then feed them to him one at a time. He'll looove ya for it
I don't fast my fish...I know your supposed to but to me it seems like that would stress them out

mine eat every day and I've never had a problem, but mine also eat tons of fresh food so that helps with clearing out their systems
