Originally Posted by Sakura8
Possibly try switching his food to a different, higher quality pellet. Look for a pellet or food that has fish products as the first two ingredients. The less wheat germ or wheat meal, the better, as these are undigestible by bettas and can be the cause of his bloating. I know when I once fed a very unhealthy pellet to my halfmoon, he swelled up like a bubble right after.
Good brands to try are New Life Spectrum (both betta formula and small fish formula work well) and Omega One pellets.
I will look into it, although my local pet store does not have too much variety in betta foods. I have seen Nutrafin, Top Fin, Aqueon, and maybe one more? I'm not sure... Anyway, I looked at the ingredients on the Aqueon pellets and it says the first ingredient is whole fish meal, followed by whole wheat flour, soybean meal, then shrimp meal... and it goes on from there. This is a bad brand to get, then?
EDIT: Forgot to include... today he got two bloodworms instead of pellets and he didn't puff up at all. :)