This is my Betta fish, Rex. He is roughly 3 months old now (We don't actually know how old he is, but when we got him, he was 1.4 inches so that's usually 2 months old). We been feeding him fish flakes because he refuses to eat bloodworms or fish pellets. We are going to try brine shrimp and see if he eats that. So far so good, we had him for a bit over a month now! :)