I'm setting up my first aquarium, a 12 gallon high (fluval edge) with filter and a heater and live plants (I don't have the tank yet) I will have cycled the tank etc, I'm just looking for a straight answer and a reason why. So here's the question... I know I can keep an african dwarf frog and a betta fish together, I also know I can keep an upside down catfish and a bristle nose pleco together (I read these are the smallest) but can I keep all of these together in a 12 gallon? If so, would it be possible to add a reed-fish in? If I am completely wrong about this could someone list a few oddball tropical fish or frogs etc I could keep in this tank? (I'm not going with the usual gold fish because I have had so many in the past. I want to try something tropical and unusual.)