CR

Haplochromis dichrourus

Declining

Overview

Haplochromis dichrourus is a species of cichlid endemic to Lake Victoria, but has not been seen since 1986. This species grows to a length of 18.6 centimetres (7.3 in) SL. It may be extinct, but is maintained as Critically Endangered by the IUCN in the small chance that a tiny –but currently unknown– population survives.

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

Threat summary

Habitat

This endemic cichlid inhabits the shallow rocky and sandy shores of Lake Victoria, particularly areas with moderate vegetation cover. The species prefers depths of 2-15 meters where it feeds on invertebrates and small fish among rocky crevices and sandy substrates.

FRESHWATER· major

Conservation measures underway

Species recoveryPolicies and regulations

Frequently asked questions

Why is Haplochromis dichrourus classified as Critically Endangered?
Haplochromis dichrourus 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 dichrourus faces severe threats from the introduction of Nile perch (Lates niloticus) into Lake Victoria, which has caused dramatic population declines across endemic cichlid species. Eutrophication from agricultural runoff and sewage has degraded water quality and reduced oxygen levels in critical breeding areas. Overfishing and destructive fishing practices have further reduced population numbers, while habitat modification from shoreline development has eliminated important spawning sites.
Where does Haplochromis dichrourus live?
Haplochromis dichrourus occurs in Tanzania, and Uganda. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Haplochromis dichrourus?
The main threats to Haplochromis dichrourus 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.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.