Gourami fish white and yellow high quality
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Gourami, also pluralized gouramis or gouramies, are popular freshwater aquarium fish, and many gourami species are easily bred in captivity. Many gourami care for their eggs in beautiful nests made from bubbles, while others scatter their eggs to the water or even keep the eggs in the father's mouth!
Identify your gourami species (recommended). The term gourami refers to an entire family of fish, including over 90 species. While many of the gourami species and varieties popular among aquarium hobbyists can be bred in the same conditions, this does not apply to every species. Ask an experienced fish breeder or biologist to examine your gouramis if you do not remember the name they were sold under.
This guide is accurate for dwarf gouramis, pearl gouramis, kissing gouramis, blue (three spot) gouramis, and honey gouramis. Note that kissing gouramis may be more difficult to breed than the others, and require a larger tank.
True gouramis and chocolate gouramis are especially difficult to care for and breed, and the process is not covered in this article. The chocolate gourami, and some other species, care for the eggs in a parent's mouth.[1]
If your gouramis do not belong to the species listed above, or if you are not certain of the species, you may still use this guide, but you may have a lower success rate or encounter unexpected difficulties.
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Feed the gouramis live or frozen food. Animal food such as blood worms, mosquito larvae, and adult brine shrimp provide adult fish with the nutrients necessary for breeding. You can purchase this in live or frozen form from an aquarium store. Supplement the dry food diet with this food several times a week.
Gathering this type of food on your own increases the risk of passing on diseases to your fish, and is not recommended without the advice of a local expert.
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Watch the fish change size and color. Adult, female gouramis may swell or change color on their underside, as they produce eggs within their bodies. Male gouramis may become more brightly colored if their diet improves, an indicator of good health and suitability for breeding. Try to find one male and one female that display these characteristics, and have no visible defects.
It may be easier to notice the change in size looking down from above.
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Identify the sex of the adult fish. If the females have noticeably changed shape as they laid eggs, or became "gravid," you may already know which gouramis are female and which are male. Some are relatively easy to identify at any point due to coloration differences. If these methods of identification are not sufficient, try the following methods:
In some gourami species, females have a more rounded dorsal and anal fin (along the spine and near the anus), while the males have a more pointed one.
Kissing gourami are difficult to identify by appearance. However, if two of the gourami are "kissing," they likely belong to the same sex, and are fighting for dominance.
If all your fish seem "swollen," try withholding their food for three or four days. Overweight males may slim down during this time, while egg bearing females probably will not.[2]
Part
2
Setting up a Breeding Tank
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1
Select a tank of the appropriate size. For most gourami pairs, select a tank that can hold 10–20 gallons (40–80 liters) of water up to a six inches (15 cm) water level.[3] This relatively small size and shallow water level actually encourages breeding and fry health, but it is not suitable for all species. Here are a few notable exceptions:
Kissing gourami will only spawn in a large tank, at least 24 inches (60 cm) deep and at least 36 inches (91 cm) long.[4]
Pearl gourami can be bred in a tank with this water depth, but the tank should be at least 31 inches (80 cm) long.[5]
Blue, or three-spot, gourami can be bred in this tank size, but a somewhat larger tank will work as well.[6] A larger tank may minimize stress and injury to the female.
Species that grow more than 10 inches (25 cm) long, including the true gourami and giant gourami, may require much larger tanks. Consult an expert before attempting to breed these species, with the exception of the kissing gourami described above.
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2
Add gravel and anchored plants. Start by adding a thin layer of gravel at the bottom. Use this to anchor several plants, large enough for the female to hide behind if the male becomes aggressive.[7] Leave some open area as well.
Upturned clay pots and other common aquarium additions can also be added to create hiding spots.
If putting rocks in the tank, be sure these are bought from an aquarium store, as rocks gathered in lakes and rivers may alter the pH of the water.
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3
Add floating plants or objects. Some species, such as the pearl gourami, create a "bubble nest" for the eggs on the underside of a