Welcome aboard. Treefrogs generally do well in that kind of enclosure. You will have to feed the frogs outside the enclosure as crickets will drown with all that water. White's, green, gray, and barking treefrogs are good choices to start with. Pick one species and stick with it, as its a real bad idea to mix amphibian species.
Another direction you can go is with Suriname toads or African clawed frogs. These are totally aquatic frogs and can live with fish as long as those fish are not too small enough to even be considered as a food source by the frogs. They will eat small fish and try eat smallish fish, choking on them.