Thanks Hallyx, I am using the Prime, I do hand feed him - bought the wrong New Life Spectrum pellets (sinking)...but afraid this is a bad habit ? He comes over and nips anytime I reach into the tank. I do look on the site for info - thanks.....interested right now in other people's Betta behavior ? thanks again!
They sometimes lose color when sleeping. Prime @ 1-drop/gal daily will keep ammonia locked up and detoxified -- 2-drops/gal of tank size for water changes. Hand-feed him one pellet at a time. You should be able to see a slight stomach bulge when he's has enough to eat, or a loss of enthusiasm for eating.
Keep researching on the forum. Below each page of threads is a menu of "similar threads." This can help guide your research.