Frogs
African Dwarf Frogs: The Complete Aquarium Care Guide
African Dwarf Frogs (Hymenochirus, commonly the species Hymenochirus boettgeri) have been a staple of the aquarium hobby for decades, and they still get sold with more bad advice than almost any other aquatic animal. They’re not fish. They don’t breathe water. And the tiny plastic cup they come home in from a chain store tells you exactly nothing about what they actually need to stay alive.

The Tank Setup: Shallow is Better
While they live underwater, African Dwarf Frogs don’t have gills. They have lungs and also breathe through their skin. They must swim to the surface to breathe atmospheric air.
If you put them in a massive, deep tank, they will exhaust themselves swimming to the surface and can actually drown.
A 5-gallon to 10-gallon long tank is a good size for a pair of frogs. A long, shallow footprint is far better than a tall, narrow one, and the water should be no deeper than 10 to 12 inches. Go deeper and the frogs will struggle to reach the surface efficiently.
You absolutely need a tight-fitting lid - they’re notorious jumpers and will escape if given the chance. Even small gaps can be an escape route.
For substrate, use smooth sand or fine gravel. Sharp gravel can scratch their delicate skin. Bare-bottom tanks are also acceptable and easiest to clean. A gentle sponge filter is best - they’re weak swimmers, and strong currents from power filters will stress them out. Sponge filters also provide a surface for beneficial bacteria to colonize.
Keep the water temperature stable between 72-78°F (22-26°C) with a small adjustable aquarium heater. Sudden temperature swings can weaken their immune system. Live or silk plants provide hiding spots and reduce stress. Java moss, Anubias, and hornwort are excellent choices. Avoid sharp plastic plants that can tear their skin. Smooth caves and driftwood add enrichment. See our Enclosure Guide for a quick reference on ADF tank requirements compared to other species.
Water Quality Matters
African Dwarf Frogs are much more sensitive to poor water quality than most fish. Their permeable skin makes them vulnerable to ammonia burns and bacterial infections.
- Cycle the tank first: Never add frogs to a brand-new tank. The aquarium must be fully cycled (ammonia 0 ppm, nitrites 0 ppm, nitrates under 20 ppm) before introducing them.
- Water changes: Perform weekly water changes of 25% to 30% using a gravel vacuum. Treat tap water with a dechlorinator before adding it to the tank.
- Test regularly: Keep a liquid test kit on hand and check parameters weekly.
What Do African Dwarf Frogs Eat?
You can’t feed them standard fish flakes. They are carnivores and need a high-protein diet. Furthermore, they have terrible eyesight and hunt mostly by smell and vibration.
If housed with fast fish, the fish will eat all the food before the frog even realizes it’s feeding time.
- The Best Diet: Frozen (thawed) bloodworms, mysis shrimp, daphnia, and specialized sinking frog pellets. Rotating foods ensures balanced nutrition.
- How to Feed: Use long tweezers or a turkey baster to target-feed the frogs directly near the substrate. This ensures they get their meal. Feed adults once daily, offering as much as they can eat in 5 minutes.
- Avoid: Freeze-dried foods (can cause bloat) and standard fish flakes (lack proper nutrition).
Tank Mates: Can They Live with Fish?
African Dwarf Frogs are extremely peaceful and completely harmless. But because they’re slow and have poor vision, you need to choose tank mates carefully.
- Safe Tank Mates: Peaceful fish like Guppies, Endlers, small Tetras (neon, ember), and Corydoras catfish. Snails and cherry shrimp also make excellent tank mates.
- Dangerous Tank Mates: Betta fish (may nip the frog’s toes or fins), Cichlids, large Goldfish (will eat the frogs), and any aggressive or fast-swimming species that outcompete them for food.
- Keep them in groups: African Dwarf Frogs are social and do best in groups of 2 to 4. A single frog may become shy and hide constantly.
Health Problems to Watch For
- Bloat (Dropsy): Fluid retention that causes the frog to swell up like a balloon. Often triggered by bacterial infection or organ failure, and frequently linked to poor water quality or overfeeding freeze-dried foods. Quarantine immediately and maintain pristine water quality. Consult an exotic veterinarian for treatment.
- Fungal Infections: Appear as white cotton-like patches on the skin. Treat with antifungal medications safe for amphibians.
- Red Leg Syndrome: A bacterial infection characterized by redness on the legs and belly. Caused by poor water conditions. Improve water quality immediately and consult a vet.
Fun Fact: Occasionally, you’ll hear a faint buzzing or clicking sound coming from your aquarium at night. That’s the male African Dwarf Frog singing to attract a mate. They’re one of the few frog species commonly available in the pet trade that vocalize entirely underwater.
