I have a 24in. long, 12in. wide, and 18in. tall aquarium (approx.) that used to be an old fish tank. I'm looking for a cool amphibian or reptile to put in it that would be happy in an enclosure that size. I'm want something not too difficult to care for that is different than what I already have (snakes,geckos). I'm really leaning towards some type of tree frog, but was wondering- does anyone have any other suggestions they think would fit the description?

Thanks!