Nothobranchius ugandensis

Adults reach a length of about 6 cm. Males are generally larger than females and have more intense coloration. Their bodies are colored in blue hues, with each scale having a burgundy edge. Red pigment predominates on the back, dorsal fin, and tail. Females, on the other hand, are characterized by light gray tones and translucent, colorless fins.

This fish is native to Africa. It can be found in shallow streams and rivers that form the drainage system of Lakes Albert, Kyoga, and Victoria in Kenya and Uganda. Its habitat is typically a shallow, murky body of water with a silty bottom, which is prone to drying out during the dry season. Usually, there is no aquatic vegetation in such places.

Males exhibit pronounced territorial behavior and can be aggressive towards other males. Females, in contrast, are peaceful. In a small aquarium, it is recommended to keep one male with several females. This species coexists well with other fish of comparable size, excluding, however, closely related Nothobranchius species.

For a group of 4–5 fish, the minimum aquarium volume should be 40 liters. They are undemanding in terms of care: it is sufficient to maintain optimal water parameters (pH and dGH) within acceptable temperature limits and regularly remove organic waste, such as food remnants and excrement. The aquarium decor can be chosen at your discretion. If breeding is planned, it is recommended to use special fibrous peat, pre-treated for aquarium conditions, coconut fibers, or a specialized spawning substrate as the bottom material. Lighting should be subdued, as excessive light can lead to a loss of color intensity in males. Floating plants will not only create the necessary shade but also prevent fish from jumping out of the aquarium.

It is important to clarify the diet with suppliers. Most often, the diet consists of live or frozen foods. Nevertheless, some breeders successfully acclimate these fish to alternative types of food, such as dry flakes, granules, and other specialized feeds.

The breeding process of Nothobranchius ugandensis is a long and challenging endeavor that is unlikely to be suitable for a beginner aquarist. This is due to the need to recreate natural conditions. In their natural environment, the fish spawn at the end of the wet season, as drought approaches. The eggs are laid in the substrate, and as the body of water dries up, the fertilized eggs remain “preserved” in the semi-dry substrate for several months. They remain in this state until the start of the rains. As soon as the bodies of water fill with water again, fry begin to emerge, which grow very quickly and reach sexual maturity by 6–7 weeks.

The fish are hardy and undemanding. Diseases usually manifest only with a significant deterioration in keeping conditions. In a balanced aquarium ecosystem, health problems are generally absent. More detailed information on symptoms and treatment methods can be found in the "Diseases of Aquarium Fish" section.

When choosing Nothobranchius ugandensis, carefully inspect the fish for any signs of oodiniosis, to which this species is extremely susceptible. A healthy specimen should be active, with clean fins and no plaque or white spots on the body. Avoid purchasing fish that appear lethargic, stay near the surface, or have damaged scales. Given the short life cycle of the species, it is advisable to acquire young specimens to be able to observe their development for the longest possible time.