I'm a bit new at this fish keeping habbit. I currently have two small tanks each with a male beta in it. They are the types of tanks that come in the beta starter kits you can find at most pet stores. You know, rocks, small plant, fish food, that sort of kit. Anyway, I recently found upside-down catfish at my local pet store. I'm thinking of getting one, but I would like to know what size tank they would need. I would also like to know if it would be able to live with a beta. Has anyone here tried that before? Also, while the tanks I have may be big enough for the baby catfish to live in, I know I'd need a larger one soon enough. What size tank should I look into? And is there anything else I should know? Thank you for the help!