CR

Haplochromis brownae

Declining

Overview

Haplochromis brownae is a species of cichlid endemic to Lake Victoria though it may be extinct in the wild. This species can reach a length of 10.4 centimetres (4.1 in) SL. The identity of the person honoured by this species' specific name is not known but it is thought most likely to be Margaret "Peggy" Brown (1918-2009) who was a visiting scientist with the East African Freshwater Fisheries Research Organization at Jinja, Uganda in 1950 or 1951, where Humphry Greenwood was working.

Haplochromis brownae faces severe threats from the introduction of Nile perch (Lates niloticus) into Lake Victoria, which has caused dramatic population declines across endemic cichlid species. Water pollution from agricultural runoff and urban development has degraded water quality in critical breeding areas. Overfishing and destructive fishing practices have further reduced population numbers, while habitat modification from shoreline development has eliminated essential spawning grounds.

Threat summary

Habitat

This endemic cichlid inhabits the shallow rocky and sandy shores of Lake Victoria, particularly areas with complex substrate structure that provide shelter and breeding sites. The species prefers depths of 2-10 meters where it can access both algal food sources and suitable spawning territories among rock crevices.

FRESHWATER· major

Conservation measures underway

Species recoveryPolicies and regulations

Frequently asked questions

Why is Haplochromis brownae classified as Critically Endangered?
Haplochromis brownae is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Haplochromis brownae faces severe threats from the introduction of Nile perch (Lates niloticus) into Lake Victoria, which has caused dramatic population declines across endemic cichlid species. Water pollution from agricultural runoff and urban development has degraded water quality in critical breeding areas. Overfishing and destructive fishing practices have further reduced population numbers, while habitat modification from shoreline development has eliminated essential spawning grounds.
Where does Haplochromis brownae live?
Haplochromis brownae occurs in Kenya, Tanzania, Uganda, and United States. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Haplochromis brownae?
The main threats to Haplochromis brownae are 8.3, 9.3, ai-1, and ai-2. The full IUCN-classified threat record for this species is detailed on the species page.

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