They breed the same as Betta splendens (Siamese fighting fish), normal paradise fish and gouramis.
Have a large shallow tank or plastic storage container. Put lots of floating plants in there. Have a filter and heater if you live in a cool climate. Feed them and let them do the rest.
The males build a bubble nest. They breed. Male puts eggs in nest and looks after babies for first few weeks.
Babies need green water and infusoria as food for the first 2-3 weeks. Then they can eat newly hatched brineshrimp.
The following link has information on culturing green water and infusoria. It takes about 4-5 weeks to get the cultures going so start them now and breed the fish later.
STARTING OUT Make sure you have a pair, (1 male + 1 female). There is nothing worse than spending your hard-earned dollars buying a couple of fish to try and breed and ending up with a pair of fish of the same sex. Let's face it, to reproduce fish you need a male and a female. Two males won't do...
Black Paradise Fish (Macropodus spechti) are a Vietnamese species in the Thu Bồn River in Quảng Nam province and Hương River basin in Thừa Thiên-Huế province