I breed DGs , this is my article on how I breed mine . ( I wrote it ! Lol)
BREEDING DWARF GOURAMI
Scientific name: Colisa lalia
Common name: Dwarf gourami
Max. size: 8.8 cm / 3.5 inches
pH range: 6.0 – 8.0
dH range: 5 - 19
Temperature range: 25 – 28°C / 77 – 82.5°F
Dwarf gouramis are easy to breed, but first, look out for the signs that a male and female are ready to breed. The female would be getting plumper and plumper, and the male s colouring will becoming more vivid and bright.
Once you notice a suitable pair that may be reaching breeding condition, if it’s possible, separate them in two aquariums for about a fortnight, while allowing them to see each other through their tank walls. Feed them a diet of high quality flake food, freeze dried bloodworms, and live foods. Of course, make sure both their aquariums are heavily planted so that they don’t feel stressed out. The tank with the male should have floating plants or you can use a margarine lid and poke a hole through the middle and attach string. From there hang it over the side and place the lid on, this will secure the the top of the bubble nest. (floating ferns or salvinia plants are a great choice.) If the male is in breeding mode , he will start constructing a bubble nest and keep adding to it daily, by blowing hundreds of bubbles.
The bubble nests of dwarf gouramis are thick and incorporate bits and pieces of plants. The male will keep blowing bubbles into the nest until it even rises up above the water level, and measures nearly an inch in height.
When the female becomes very plump (due to being filled with eggs), it’s time to breed them. Reduce the water level in the male’s tank to about 10 cm height, and slowly let in the female. The pair will start spawning. During this the male will wrap himself around her and "quiver" she will then release eggs and he will fertilise them. This can happen 6-7 times.After spawning is over, which takes about a few hours, remove the female from the tank and place her back in her own tank (not the community tank). This gives her a chance to recuperate for a few days. Meanwhile, the male will take care of the eggs and young, after they spawn.
When the fry become free swimming, which typically takes a few days, they will leave the nest, which by this time will be disintegrating. Remove the male at this point, and feed the fry with infusoria (infusoria cultures can be purchased from aquarium shops). After a week or so, you can start the fry on brine shrimp and minute amounts of mashed hard boiled egg yolk.
