Nothobranchius Guentheri killifish breeds easily. For breeding use a bare bottom tank. Place some sphagnum peat moss in a bowl on the bottom. The bowl is necessary to prevent the moss spreading all over the tank. Boil the sphagnum moss beforehand, in water to reduce the level of acidity in the peat moss. The tank should have a sponge filter to keep the water clean. Lower the level of the water to about six inches. Keep the males and females separate until you want them to breed. They should be fed mostly livefood and some fish flakes to condition them. At two months old they should be mature enough to breed.
When you are ready to breed them put them into the breeding tank. Put some malachite green and methylene blue in the water at less than the recommended dose to protect the fish and young from illness.
The fish should if they are mature and healthy breed within an hour of introduction.
The Guentheri killifish are quite promiscuous and will readily mate with no choice as to partner and they will breed anywhere. They try to breed just below the surface of the peat moss.
The male will entice the female to the moss to breed by showing off. The female will follow the male and he will bend his dorsal fin over the female’s back to push her down into the peat moss.
When they are both buried into the peat the female will release an egg and the male will fertilise it. After a few seconds they will move and separate.
They will repeat this process many times over the next few days. Keeping feeding the fish with live food and siphon off any uneaten food from the bottom. Replace the water with aged tap water.
Keep on eye on the sponge filter as it will get clogged up with peat moss. Clean out by rinsing in a bucket of aged water. Remember not to clean out everything because there is healthy bacteria in the sponge that helps filter toxins from the water.
When the pair stop breeding then remove the bowl of peat moss. Put the peat into a net and squeeze out all the water. Then place the peat on a surface to dry out further. Leave at room temperature. When the peat moss is very slightly damp but not wet then it is ready to bag up in a plastic bag. Seal the bag.
Store the bagged up peat with eggs in a dark place at temperature of 25 C, until the eggs are ready to hatch. Which should be after twelve to sixteen weeks.
Then the eggs are ready to hatch.
Hatch out in a fish tank with only a few inches of water. Keep an airstone in the tank. Change 10% of the water every day.
When the fish hatch you can feed the young killifish with brine shrimps and microworms.
This book covers everything you would like to know about keeping and breeding the most popular species of killifish. Lots of good general advice about killifish in general written in an easy to understand way. Lots of step by step guidelines. As a bonus a lot of colourful pictures of killifish, which you would expect. For example – how to buy online, how to hatch out the eggs and as a bonus how to take great killifish photos.