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Bettas are difficult to breed, and not recommended for beginners. Females can be identified by a small, white 'pearl' at the rectum. This is called an ovipositor, most visible from below the fish. They lay egg clutches of approximately 100-500 eggs, rarely over 600 eggs. However, sometimes males have this as well, making it difficult to tell.

The male tends the eggs and newborns. Betta males build bubble nests of various sizes and thicknesses on the top of their tanks, sometimes even when not in the presence of female or young. Quick temperature change, barometer changes, materials in the tank, and presences of other males or females all have been shown to stimulate bubble nest construction. However, after the young fish are swimming freely, the chore of tending them falls upon the human owner. Therefore, it is advisable to research and prepare baby food, baby-ready (cycled) tanks, etc. prior to actual breeding. Some of these foods improve its actions such as speed, growth, and energy.

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17y ago

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