双斑伴丽鱼 · Jewel Cichlid

Overview

Despite its frequent appearance in trade, Hemichromis bimaculatus is poorly suited to an unplanned general community. Aggression intensifies around reproduction, making compatible pairing and timely separation of other fish major practical concerns.

Distribution & habitat

Its west African range extends from southern Guinea toward central Liberia. Small streams and canals with overhanging plants and surface cover are typical habitats.

Aquarium setup

Provide many retreats using pots, rocky caves, wood, and dense planting. Fish dig, so plants need firmly established roots or pots. Shelter helps individuals escape pursuit, but cannot compensate for cramped accommodation.

Diet & feeding

Most foods are accepted. Live items can support coloration, while vegetable or spirulina flakes and softened spinach supply useful plant material. Maintain variety when conditioning adults rather than relying on a single rich food.

Behaviour & compatibility

It is territorial and can kill other residents during spawning. Substantial, robust companions require generous space and careful supervision. A compatible pair is preferable to simply combining two adults: the weaker fish may otherwise be killed. Start with five or six juveniles, let partners choose one another, and promptly remove the others once a pair forms.

Sexual dimorphism

Sexing is difficult. Males show a netlike blue pattern in the central tail region, and mature males develop a more pointed dorsal fin. Assess these clues together rather than relying on one feature alone.

Breeding

A cleaned flat rock, pot side, or tank wall receives the clutch. The female generally tends eggs while the male defends the area, although roles can overlap. Even established partners need observation because an unreceptive female can be harassed severely.

The pair excavates nearby shallow pits and moves hatchlings between them. Once swimming freely, fry take microworms and Artemia nauplii. Parental attention commonly continues for approximately a month; separate rearing may then be needed as the adults prepare another clutch.

Notes

An additional dark tail-peduncle spot is a useful identification clue among similar forms. A broad jewel-cichlid trade label alone does not establish species identity.