How do african dwarf frogs mate?
John Campbell 
Dwarf frogs in Africa mate in amplexus, which involves the male grabbing the female around the abdomen right in front of her back legs. The female becomes immobile, with occasional twitching of her front limbs. Amplexus normally occurs at night, after the male has “humming” for one or more nights.
Amplexus happens most often at night when the male has finished singing for one or two nights in a row. While the amplexus is taking place, the female will swim around, dropping fresh eggs, while the male fertilizes them by discharging sperm into the water.
This procedure could take many hours to complete. When the female has completed releasing the eggs, she will remain immobile to indicate to the male that she is ready to be released. It’s very typical for her to remain still for several minutes. They resume their normal routine after the male has freed her.
Most African Dwarf Frogs begin mating when they reach the age of 9 to 12 months. There isn’t a definite number, such as 9 months, because it is largely dependent on the frogs available.
There are, however, some telltale signals that you can check for to discover if they are actually interested in being sexually active. The male’s behavior is the most apparent. When it thinks it’s time to start mating, it usually starts singing.
This can get so loud that you can hear it from outside the aquarium. It sounds like a humming or buzzing sound. If the singing continues for more than a day or two, it’s a good indication that your male frog is ready to start mating with another female.
The amplexus process will take several hours to complete. It should take about 48 hours for the eggs to start hatching after they were released and fertilized by the males. This is an estimate, so don’t be surprised if it happens a bit sooner or later.
The eggs may occupy about a week to hatch. This isn’t extremely often, but it does happen occasionally.
