The Aqueon pellets are ok, but they contain a lot of grains. Some bettas are sensitive to these, and can become constipated and bloated.
I would fast him today and then switch him to a higher protein food. The two most often recommended foods on this forum are New Life Spectrum Betta pellets and Omega One Betta Buffet pellets.
One of my guys had issues with constipation and bloating when getting Aquueon. After switching over to Omega One, he's been fine.
Petco carries both New Life Spectrum and Omega One. Petsmart carries just Omega One.
Last edited by LittleBlueFishlets; 04-20-2013 at 10:46 AM.