The underwater dwarf from (Hymenochirus spp) is also known as the African dwarf frog. When getting one, make sure it's a Hymenochirus species, and not an African clawed frog (Xenopus spp), which looks similar when young. The underwater dwarf frog is not a demanding species, providing that its needs are met.
Underwater dwarf frogs have pretty basic requirements for their aquarium. Any aquarium housing these frogs needs to have a sturdy lid, as they are celebrated jumpers. They also require a tank of at least ten gallons. A frog aquarium should have lots of aquarium plants and other hiding places. A frog will actually stay out in the open more if it has enough hiding places to feel safe in a fish tank.
Dwarf frogs are not super particular about their aquarium requirements, which are similar to the requirements for tropical fish. The water should be kept between 64 and 77º Fahrenheit. Their tank should be kept out of direct sunlight, which can overheat the water and lead to rapid temperature changes. Aquarium water conditioner, which removes chlorine, is a must. Above all, stability is very important. These frogs can adapt to a variety of conditions, but don't handle sudden change well.
Underwater dwarf frogs are not much harder to feed than aquarium fish. You can use any meat-containing flake food, like brine shrimp flakes, as a dietary staple. Additionally, you can feed live or frozen foods like blood-worms and brine shrimp as the occasional treat. Most pet shops carry these items. Only feed what the frogs can eat in a few minutes. Any food beyond this will rot in the tank and can foul the water.
Underwater dwarf frogs tend to get along well with most fish. When picking fish to share a tank with these frogs, the fish's demeanor is more of a concern than the frog's. Any small aquarium fish with similar requirements can share a tank. However, avoid fish large enough to eat the dwarf frog. Additionally, aggressive fish may harass these frogs. There are very few fish small enough to find themselves in any kind of danger from an underwater dwarf frog.