First I would like to say hi since this is my first post. My names Joe I've been keeping aquariums for about 7 years I've had salt and freshwater tanks. I'm now looking into freshwater stingrays but can only go as large as 150us gallons. I've read that there are two types of freshwater stingrays that can live in a 150 for there whole life? Is this true because i don't want to get a animal I cant take care of properly. I'm sure yous get this question a lot so I'm sorry LOL