You know, I tried to remember where I bought it from, and for the life of me can't. I even did a google search and can't find one similar. If I come across it, I'll let you know. I do know it wasn't expensive, or I wouldn't have bought it! I'm pretty sure it's a hospital tank so you can easily re-capture the fish that's being treated, and also, so the fish can stay in with its "friends".