Fish
Jewel Cichlid
Hemichromis bimaculatus · also called jewel cichlids, red jewel cichlid
Flushing brilliant red across its body as a rival strays too close to the nest, a jewel cichlid stands ready to attack, its iridescent blue spangling and fierce parental defence together making it one of the most visually striking and behaviourally intense cichlids kept anywhere.
Overview
The jewel cichlid, Hemichromis bimaculatus, is a strikingly coloured, highly territorial fish native to wetland and rainforest river habitat across West Africa, from Guinea to Cameroon. Its brilliant red breeding colouration studded with blue spangles, extremely aggressive parental care, and successful establishment as an invasive species in several warm regions worldwide make it one of the most ecologically assertive and visually memorable members of the cichlid family.
Beauty backed by aggression
The jewel cichlid’s vivid breeding colours are not just for display, since this species backs up its striking appearance with some of the most relentless parental defence found among cichlids, attacking almost any intruder that approaches its eggs or fry regardless of size.
Status
Least Concern, remaining widespread across suitable wetland and rainforest river habitat throughout West Africa.
Jewel Cichlid: common questions
Why does the jewel cichlid turn bright red?
This species flushes a brilliant red across much of the body when breeding or defending territory, studded with iridescent blue-green spangles, a dramatic colour change from its more muted everyday appearance that signals both readiness to breed and a warning to potential intruders.
Is the jewel cichlid a good community fish?
Not typically, since this species is known for extremely aggressive defence of its eggs and fry, with both parents attacking almost any perceived threat regardless of size, a temperament that makes it poorly suited to a peaceful mixed community aquarium.
How do jewel cichlids care for their young?
Both parents share responsibility for guarding the eggs and later shepherding the free-swimming fry as a tight group, a form of cooperative biparental care common among cichlids that helps improve survival odds for the vulnerable young.
Has the jewel cichlid spread beyond its native range?
Yes, this species has been introduced and become established outside its native West African range in several warm regions of the world, where its aggressive nature and adaptable diet can allow it to outcompete native fish for food and space.