African Dwarf Frog Mating Habits

African dwarf frogs (Hymenochirus genus) are active little amphibians known for their peaceful nature and unique behavior.

The African Dwarf Frog is a small animal that can reach 2.5 inches (7 cm) in length (snout to vent) when fully grown.

There’s nothing more rewarding than raising a clutch of tadpoles and watching them thrive.

African Dwarf Frog

Sexual Dimorphism

African dwarf frogs are sexually dimorphic, so there are visible differences between the male and female appearance and behavior.

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  • Females: Mature female African dwarf frogs will have a pronounced pear-shaped body, which fills with eggs when she becomes gravid. Females are about 1 to 1.5 inches larger and plumper than the male. The cloaca of a female African dwarf frog is typically larger and bumpier than the males which is flat.
  • Males: Male African dwarf frogs are smaller with a slimmer abdomen. Male African dwarf frogs develop subdermal glands that appear as pink or white bumps on the underside of their forelimbs.

Both male and female African dwarf frogs behave similarly, although males tend to be more vocal than females.

Most well-cared-for African dwarf frogs can live for 5-10 years and reach sexual maturity between 6 to 12 months. African dwarf frogs can only reproduce once they are sexually mature.

Mating Process

Like most amphibians, African dwarf frogs are egg-layers.

Similar to many fish, however, the eggs are externally fertilized by the male frog as they’re released by the female.

Here’s everything you need to know about African dwarf frog reproduction and how it works:
  1. Preparing for mating: When both the male and female frog are ready to mate, the male will “sing” to attract the female. Male African dwarf frogs will sing during the night to attract females, which is when reproduction occurs.
  2. Mating (amplexus): The mating process begins when the male grasps the female frog from behind, just in front of her back legs. Once the male has attracted a gravid female, he will clasp his forelimbs above the female’s hind legs. The female African dwarf frog will become motionless, often staying at the bottom of the aquarium. The male will stay clasped to her groin area for the entire mating period, sometimes up to several hours. Amplexus usually happens at night after one or more nights of "humming" by the male.
  3. Egg laying and fertilization: When the female is ready, she’ll swim to the surface (bringing the male along with her) to release her eggs. Both male and female African dwarf frogs will release simultaneously and sit underwater between releases. The females swim upside down and deposit unfertilized eggs on the surface of the water. During this, the male releases sperm over the eggs for external fertilization. The male fertilizes the eggs during this time by releasing sperm into the water. Amplexus can last for several hours. The female lays her eggs at the surface of the water, one at a time, whilst towing the male. The female swims to the bottom between layings.
  4. After spawning: Once spawning is complete, the male African dwarf frog will release his hold on the female. Once the eggs have been fertilized, the male will unclasp himself and return to normal behavior.

Mating Process of African Dwarf Frogs

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Note that females do not lay all the eggs at once, each spawning releases only a dozen eggs.

Tadpole Development

As long as conditions in the breeding tank are suitable, your African dwarf frog eggs should hatch after about 48-72 hours. Temperature plays an important role in breeding. The point is that eggs will not hatch at temperatures below 22°C. The ideal breeding tank temperature is 78°F.

When the eggs hatch, the young will be in the form of tiny tadpoles. The tadpoles are very young and not swimming much yet.

African dwarf frog tadpoles are tiny with oval-shaped bodies and long tails they use to swim. The tadpoles have a brownish coloration and may take up to 8 weeks to develop into their adult form.

During the next 4 - 5 days, hatchlings remain at the water surface attached by a mucous thread. Only after that, they start swimming. They get their back legs in about 10 days or so and then their front legs develop around 24 days. Fully grown tadpoles reach about 2 cm (0.8 inches).

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Your tadpoles will feed primarily on infusoria when they first hatch, though you can supplement their diet with liquid fry food. What you need are small live foods. Cyclops and Daphnia are the classic options. Egg-layer fish foods (Liquifry for example) or powdered fish food made for baby fish can be used.

It takes about 6-8 weeks for African dwarf frog tadpoles to develop into froglets. At this point, it’s a good idea to slightly lower the water level in the tank to give the froglets easy access to the surface for breathing while their swimming skills continue to develop.

African dwarf frog Tadpole progress. 24 hours to 7 weeks

Breeding Conditions

The key to successfully breeding African dwarf frogs is to condition your breeding stock well. You’ll need at least one male and one female frog, both having reached sexual maturity. African dwarf frogs tend not to be picky, but it’s important to choose nutritious foods if you want them to be in good breeding condition. Proper feeding African dwarf frogs means focusing on high-protein live and frozen foods introduced a few weeks before you try to stimulate spawning. As you’re conditioning your African dwarf frogs and taking steps to simulate the rainy season, keep an eye out for courting behavior. You’ll know your frogs are ready to mate when the male initiates amplexus.

Creating the Right Environment

  • Set up a separate breeding tank.
  • Try to replicate rainy season conditions. If your African dwarf frogs aren’t readily mating, you can try simulating the rainy season in their natural habitat. Gradually reduce the water level in the tank over a few days, then refill it with slightly cooler water.
  • Keep the water temperature in the proper range. The best temperature range to stimulate breeding behavior in African dwarf frogs is between 78°F and 82°F.

Additional Considerations

Unfortunately, adult African dwarf frogs will eat any eggs or tadpoles they find in the aquarium. African Dwarf Frogs are also cannibalistic. They usually eat all of their eggs before they even hatch. They will also eat their own tadpoles.

Therefore, finding the eggs and removing them for careful rearing is essential to optimise your chances of getting big numbers of tadpoles. A separate tank to add to the nursery tank is needed to keep them separate.

Here's a table summarizing the key stages and conditions for African Dwarf Frog mating and tadpole development:

Stage Description Ideal Conditions
Courtship Male "sings" to attract female Mature frogs, proper diet
Amplexus Male grasps female Darkness, quiet environment
Egg Laying Female releases eggs, male fertilizes Surface of water, slight current
Hatching Eggs hatch into tadpoles 78°F (25.5°C), clean water
Tadpole Development Tadpoles grow and develop legs Infusoria, liquid fry food, frequent water changes

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