I just got a small 3 inch FE 2 days ago. Yesterday I put in some frozen blood worms. He swam up to them and sucked them in, then spit them back out. So I assumed he doesn't like them. I put in a shrimp pellet last night and I woke up to find it untouched. I just bought some small Earth Worms from Petsmart and put one in the tank. He swam up to it and touched it with his nose and swam away. I don't know what else to feed him... Help please!