I give mine carrots (he loooves carrots!), strawberries (he loooves strawberries too! haha), bananas (keep in mind this is only occasionally, not on a regular basis). He also loves live worms. He eats them up like spaghetti. lol. You can also try feeders such as guppies, or minnows (minnows are really cheap!). It's fun watching them dash after the fish. Also you should try different veggies, although it's hard to get them to eat their greens sometimes.