Trondo Mainty
CR

Trondo Mainty

Ptychochromoides betsileanus

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Trondo_mainty

Overview

The trondo mainty is a critically endangered species of cichlid endemic to the Onilahy River Basin in southwestern Madagascar. Its remaining range covers less than 10 km2 (3.9 mi2) and it is highly threatened by habitat loss, fishing, and competition with/predation by introduced species. Another cichlid from the same basin, Ptychochromis onilahy, is probably already extinct. The trondo mainty reaches a standard length (SL) of 24 cm (9.4 in).

Ptychochromoides betsileanus faces severe threats from habitat degradation in Madagascar's freshwater systems. Deforestation and agricultural expansion have led to increased sedimentation and pollution in the rivers and streams this endemic cichlid depends upon. The species' extremely limited range makes it particularly vulnerable to localized environmental changes, while introduced fish species may compete for resources or prey upon juveniles.

Threat summary

Habitat

This endemic Malagasy cichlid inhabits freshwater rivers and streams in the Betsileo region of central Madagascar. The species requires clear, well-oxygenated waters with rocky or sandy substrates typical of Madagascar's highland aquatic ecosystems.

Rocky areas· major

Frequently asked questions

Why is Trondo Mainty classified as Critically Endangered?
Trondo Mainty 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. Ptychochromoides betsileanus faces severe threats from habitat degradation in Madagascar's freshwater systems. Deforestation and agricultural expansion have led to increased sedimentation and pollution in the rivers and streams this endemic cichlid depends upon. The species' extremely limited range makes it particularly vulnerable to localized environmental changes, while introduced fish species may compete for resources or prey upon juveniles.
Where does Trondo Mainty live?
Trondo Mainty occurs in Madagascar. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Trondo Mainty?
The main threats to Trondo Mainty are 5.3, 8.1, ai-1, and ai-2. The full IUCN-classified threat record for this species is detailed on the species page.

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