Options for a 20 long ?

[Gnag the nameless]

Well, I suppose you could keep mudskippers. They require a very similar setup to frogs, and you can find them at petland. If I were in your position, though, I'd be off buying a pacman frog in the blink of an eye love those frogs.

Arachnids such as a whipscorpion can be costly but rewarding.

Honestly, I think mudskippers or a frog of the Rana family would be good. They're usually small and require water, but not that much. They're also fun pets. I don't suggest a bullfrog, even the juveniles of that kind would probably require a larger tank.

[Psychotic]

I have a 20L zilla critter cage laying around too (along with a couple of 10 gallons). I've been contemplating getting a couple of fire bellied toads.

[Elliriyanna]

I decided to sell it and start working on an Axolotl tank if we have room when we move I am excited ...