CR

Haplochromis theliodon

Declining

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Haplochromis theliodon 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 rocky shores and shallow waters of Lake Victoria, typically found at depths of 1-15 meters among boulder fields and rocky substrates. The species prefers areas with good water circulation and moderate wave action, which provide optimal conditions for feeding on algae and small invertebrates.

FRESHWATER· major

Conservation measures underway

Species recoveryPolicies and regulations

Frequently asked questions

Why is Haplochromis theliodon classified as Critically Endangered?
Haplochromis theliodon 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 theliodon 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 theliodon live?
Haplochromis theliodon occurs in Kenya, 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 theliodon?
The main threats to Haplochromis theliodon 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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