Last week I put 2 ghost shrimp in my 2 gal tank with 1 male Betta. I had read on here and had actually been reassured by members that was a good combo. Anyway, the Betta just finished the second shrimp for breakfast today. The first one he ate seemed like a full size ghost shrimp. I know they're sold for food, but I was told this would be fine. The Betta gets fed twice a day and water is A O.K. What's the deal?