Well most foods for Cories contains shrimp too so he is getting some protein but he does need to behave and let the Cories have their own food LOL.
He is beautiful and so unique in his coloring and looks VERY healthy. You are a good mommy and you will get it worked out. I agree with Natalie though, try him on some freeze-dried bloodworms and see if that will tempt him. Almost all the bettas that we have had really big problems with in eating their food have loved the bloodworms. If he does not eat them, your other fish will. The Cories love them and will swim to the top to pluck one off the surface if the betta doesn't eat it. (after a while, when the Betta is not watching)
You can be very proud of him and he sounds like he has a great personality if he is such a little stinker!
Rose
