Black Betta

Adults of this fish reach a length of 5–6 cm. Their coloration is predominantly brown, adorned with bright blue speckles across the body. The fin rays also display a blue tint against a red background. Males are distinguished from females by their richer color and more developed fins and tail. It should be noted that color variations may differ slightly depending on geographical origin, as populations have been isolated for quite some time, although they can interbreed when kept together. This circumstance prevents them from being classified as separate species.

Their natural habitat includes the southern regions of Thailand, part of peninsular Malaysia, and the northern territories of Sumatra. Here, the fish inhabits swampy areas of tropical forests. These biotopes are characterized by significant fluctuations in water levels, depending on the alternation of dry and wet seasons. The water here is still or slow-moving, often shaded by vegetation and poor in oxygen. A few populations are also known from brackish water in coastal areas.

Although these fish are fighting fish, dwarf betta males exhibit significantly less aggression compared to other members of the genus, and their skirmishes rarely result in serious injuries. Nevertheless, for aquarium keeping, it is advisable to limit to one male. Females of the same species or other peaceful species of similar size and temperament can accompany it. Avoid keeping them with larger and more active fish species that could frighten such small inhabitants.

For a single pair, an aquarium of at least 40 liters is sufficient. For decoration, preference is given to tall, shade-loving plants that reach the water surface. Large snags and various shelters can be placed on the sandy bottom: for example, decorative objects such as sunken ships or castles, as well as ceramic pots overturned on their side. In their natural environment, the bottom of water bodies is often covered with plant debris (leaves, branches, fruits, grass, etc.). In an aquarium, oak leaves can be used to simulate these conditions. They are first dried, and then soaked until they begin to sink; otherwise, they will simply float. Leaves not only complement the decor but also create special water conditions, as they enrich the water with tannins during decomposition, giving it a light brown tint. The hydrochemical parameters of the water should be slightly acidic with low hardness. It is recommended to install a filter that uses alder cones as a filter material, which will help further acidify the water. It is important to ensure that there is a lid over the aquarium, as a moist and warm layer of air forms beneath it at the surface, which is critically important for the respiration of labyrinth fish. Aquarium care includes weekly partial water changes (10–15% of the volume), regular cleaning of the substrate from organic contaminants (excrement, uneaten food remnants), and periodic replacement of leaves, if used.

High-quality dry foods are suitable for these fish, which should ideally be supplemented with live food such as Artemia, Daphnia, or bloodworms. Alternatively, specialized formulations for fighting fish, which include the Dwarf Betta, can be used. Such foods already contain all the necessary vitamins and trace elements that promote growth and maintain vibrant coloration. When choosing, preference should be given to products from well-known brands.

At the beginning of the breeding season, the male builds a bubble nest, using broad leaves, dense floating vegetation, or natural shelters on the bottom, such as caves that may be part of the aquarium decor. During this work, the male behaves quite aggressively towards the female, not allowing her to approach the nest until it is fully completed. Before spawning, the female's color dulls, and dark horizontal stripes become visible on her sides. Spawning itself is accompanied by special “embraces,” where the fish seem to entwine around each other. At the moment of peak tension, milt and several eggs are released, which are then carefully placed into the nest. This process is repeated several times until about 150 eggs are laid. After this, the female departs, and the male remains to guard and care for the future offspring. Fry appear after 24–48 hours and remain in the nest for another 3–4 days. During this time, the male diligently returns any fry that accidentally fall out or swim away back to the nest. As soon as the fry begin to swim freely, the male's interest in them wanes. Adults are not prone to cannibalism and generally do not eat their offspring. However, this does not apply to other aquarium inhabitants, so it is recommended to move the fry to a separate tank with identical water conditions. They should be fed specialized foods for aquarium fish fry.

One of the main causes of most fish diseases is inadequate living conditions and a low-quality diet. If the first signs of illness are noticed, it is first necessary to check the water parameters to rule out elevated levels of dangerous compounds (ammonia, nitrites, nitrates, and others). If deviations are found, the indicators should be stabilized to normal, and only then should targeted treatment begin.

When choosing a black betta, pay attention to the fish's activity: healthy individuals should show curiosity and swim in the water column, rather than constantly hiding in corners. It is important to inspect the body for the absence of white film, ulcers, fin damage, and signs of frayed scales. Also, ensure that the fish in the store do not appear emaciated and that their breathing is even and calm. Avoid purchasing individuals that appear apathetic or have unnaturally clamped fins, as this may indicate stress or infectious diseases. When purchasing a pair or group, it is advisable to observe their interaction to rule out the presence of aggressive individuals with serious injuries.