I'm thinking about possibly getting a couple piranha. I really don't know too much about them, but I think that they would be fun to have. Does anyone have any piranha experiences or any big do's and/or don'ts? Also the only type I've ever heard about are red bellied piranha. Anyone know of any other type that is sold? I know the basics about them. They can't be kept with any other fish and they can only live together if they are introduced into the tank together, but other than that I really don't know much about them. I'd like to learn more before I decide whether or not to buy them. Thanx for any help.