CR

Otothyris juquiae

Unknown

Overview

Otothyris juquiae is a species of freshwater ray-finned fish belonging to the family Loricariidae, the suckermouth armored catfishes, and the subfamily Hypoptopomatinae, the cascudinhos. This catfish is found in South America, where it is only known from the Juquiá River, part of the Ribeira de Iguape River basin, in the municipalities of Juquiá and Registro, in São Paulo state, Brazil. The species reaches a standard length of 3.2 cm (1.3 in).

Otothyris juquiae faces severe threats from deforestation and agricultural expansion in Brazil's Atlantic Forest region, which has reduced its freshwater habitat to fragmented remnants. Water pollution from agricultural runoff and urban development further degrades the clear, fast-flowing streams this species requires. The extremely limited range makes the population highly vulnerable to any local environmental changes or catastrophic events.

Threat summary

Habitat

This small armored catfish inhabits clear, fast-flowing streams and tributaries within Brazil's Atlantic Forest biome. It requires well-oxygenated waters with rocky or sandy substrates and dense riparian vegetation that provides shade and organic matter input.

FRESHWATER· major

Frequently asked questions

Why is Otothyris juquiae classified as Critically Endangered?
Otothyris juquiae 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. Otothyris juquiae faces severe threats from deforestation and agricultural expansion in Brazil's Atlantic Forest region, which has reduced its freshwater habitat to fragmented remnants. Water pollution from agricultural runoff and urban development further degrades the clear, fast-flowing streams this species requires. The extremely limited range makes the population highly vulnerable to any local environmental changes or catastrophic events.
Where does Otothyris juquiae live?
Otothyris juquiae occurs in Brazil. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Otothyris juquiae?
The main threats to Otothyris juquiae are 2.1, ai-1, ai-2, and ai-3. 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.