It's small. Only 10 gallon. I've had a lot of different species over the years back when I had a huge tank. After college I'd like to build a goldfish/koi pond and I've always wanted a tank with a big wolf fish or some sort of catfish. My favorite fish I've kept is a crayfish named dick. He lived for a number of years and was just a dick to everything. He used to stand on top of his cave like King Kong, jump off and float down only to climb back up. Helluva personality.