Blackwolf, I looked on some of the other forums and you can feed them fish pellets, shrimp, and goldfish. This is my first one so I am learning. They can turn so fast and touch their tail with their mouths. The little mouth tentacle thingies can rotate up and down and I think they flatten them out when swimming on the surface and use them to detect vibrations of things that fall in the water. Get one even though they are expensive if you can get a big tank for one. I kind of put the cart before the horse and am searching for a large acryllic tank setup.