EN

Nannothrissa stewarti

Unknown

Overview

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

Nannothrissa stewarti faces severe pressure from overfishing and destructive fishing practices in Lake Tanganyika, where intensive commercial fishing has dramatically reduced population numbers. The species is particularly vulnerable to fine-mesh nets that capture juveniles before they can reproduce. Water quality degradation from agricultural runoff and sedimentation from deforestation in the catchment area further threatens this endemic cichlid's spawning and feeding grounds.

Threat summary

Habitat

This endemic cichlid inhabits the pelagic waters of Lake Tanganyika, primarily in open water areas at depths of 10-60 meters. The species forms schools in the lake's clear, oxygen-rich waters and relies on rocky littoral zones for spawning and juvenile development.

Marine oceanic· major

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Frequently asked questions

Why is Nannothrissa stewarti classified as Endangered?
Nannothrissa stewarti is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. Nannothrissa stewarti faces severe pressure from overfishing and destructive fishing practices in Lake Tanganyika, where intensive commercial fishing has dramatically reduced population numbers. The species is particularly vulnerable to fine-mesh nets that capture juveniles before they can reproduce. Water quality degradation from agricultural runoff and sedimentation from deforestation in the catchment area further threatens this endemic cichlid's spawning and feeding grounds.
Where does Nannothrissa stewarti live?
Nannothrissa stewarti occurs in Congo - Kinshasa. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Nannothrissa stewarti?
The main threats to Nannothrissa stewarti are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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