CRCritically Endangered

Atlantirivulus nudiventris

Declining

Overview

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

Atlantirivulus nudiventris faces severe threats from urban expansion and agricultural development in its extremely limited range along Brazil's Atlantic coast. The species' dependence on pristine freshwater streams makes it particularly vulnerable to water pollution from industrial runoff and domestic sewage. Climate change poses an additional threat through altered precipitation patterns that could disrupt the delicate hydrological balance of its coastal stream habitats.
Threat summary

Habitat

This critically endangered killifish inhabits small freshwater streams and shallow pools in coastal Atlantic Forest regions of southeastern Brazil. The species requires clean, well-oxygenated waters with specific temperature and pH ranges typical of pristine Atlantic coastal watersheds.

FRESHWATER· major

Other threatened species in RIVULIDAE

Flame Rivulus

Cynodonichthys uroflammeus

Unknown

Frequently asked questions

Why is Atlantirivulus nudiventris classified as Critically Endangered?

Atlantirivulus nudiventris 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. Atlantirivulus nudiventris faces severe threats from urban expansion and agricultural development in its extremely limited range along Brazil's Atlantic coast. The species' dependence on pristine freshwater streams makes it particularly vulnerable to water pollution from industrial runoff and domestic sewage. Climate change poses an additional threat through altered precipitation patterns that could disrupt the delicate hydrological balance of its coastal stream habitats.

Where does Atlantirivulus nudiventris live?

Atlantirivulus nudiventris occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.

What are the main threats to Atlantirivulus nudiventris?

The main threats to Atlantirivulus nudiventris 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.

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.