Aphyosemion mimbon

Adult aphyosemion mimbon reach 5–6 cm in length. Males have brighter colours and are usually slightly smaller than females. Their base colour is orange with blue iridescence on the sides. Females are much duller, their body pink with scattered red spots.

This species comes from equatorial Africa, mainly the north-western part of Gabon and south-eastern Equatorial Guinea. It inhabits forest streams, ponds and temporary pools under dense tropical forest canopy. The typical habitat is shallow and shaded, with a thick layer of silt, mud and leaf litter on the bottom.

Males are territorial. Keep a group of one male and several females. Females can also be aggressive towards males, especially if the fish were introduced to the tank at different times and are not used to each other. Towards other fish species, aphyosemion mimbon is usually peaceful. However, because conflicts are possible, avoid keeping it with related species.

Aphyosemion mimbon does not need much space. For 4–5 fish, 20–40 litres is ideal. Furnish the tank with dense aquatic plants including floating types, dark soft substrate and dimmed lighting. Add fallen leaves: as they break down, they tint the water brown and add tannins, which are beneficial for the fish. A simple air-lift filter works well. Do weekly partial water changes, remove organic waste and maintain the equipment.

This species is omnivorous. Feed a varied diet of dry, frozen and live foods daily. A protein-rich diet is essential for their health.

In nature, reproduction is linked to the dry and wet seasons. As rains become scarcer, the fish lay eggs in the upper layer of substrate such as silt or peat. Spawning lasts several weeks. During the dry season, the water dries out but the fertilized eggs remain in moist soil for up to two months. When rains return and water levels rise, the fry hatch. This unique breeding strategy makes breeding aphyosemion mimbon at home very difficult, as it requires long-term storage of eggs in moist substrate in complete darkness.

Proper conditions minimise disease risk. Live food can introduce parasites, but a healthy fish's immune system usually handles this.

When buying, choose active fish with clean fins and no visible damage or body coating. The fish should be curious and not emaciated. Because this species is sensitive to water conditions, prefer fish from breeders who can confirm stable parameters in the tank where the fish were kept. Avoid fish that look lethargic or apathetic, as this may indicate stress or hidden disease.