It is recommended to conduct spawning in a separate tank. A small aquarium of 30–40 liters, filled only halfway to simulate shallow water, and decorated with numerous floating plants, is suitable for this purpose. The water parameters in it should match the conditions of the main aquarium. Necessary equipment includes a simple air-driven filter, a heater, and a low-power lamp. A lid on the aquarium is mandatory. In artificial conditions, the breeding season can begin regardless of the time of year. Therefore, when some fish become noticeably rounded and others acquire a more intense coloration, this will be a signal to prepare the spawning tank. First, the female is transferred, and the male joins a couple of days later and, as a rule, immediately begins to build a bubble nest among dense vegetation, which can reach 5 cm or more in diameter. Spawning itself is accompanied by special “embraces,” during which eggs and milt are released. The male collects the fertilized eggs and transfers them to the nest. After this, the female no longer participates in caring for the offspring, and she can be returned to the main aquarium. The male remains to guard the clutch and newborn fry during their first days of life until they begin to swim freely in search of food. This takes about 4–5 days, after which he can also be returned to the other fish.