CR

Melanorivulus egens

Unknown

Overview

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

Melanorivulus egens faces severe threats from habitat destruction due to urban expansion and agricultural development in its restricted range in southeastern Brazil. Water pollution from agricultural runoff and urban waste significantly degrades the shallow freshwater environments this killifish depends on for survival. The species' extremely limited distribution makes it particularly vulnerable to localized environmental changes and human activities.

Threat summary

Habitat

This critically endangered killifish inhabits shallow freshwater streams, pools, and wetlands in the Atlantic Forest region of southeastern Brazil. It typically occurs in slow-moving or temporary water bodies with dense aquatic vegetation and soft substrates.

Other threatened species in RIVULIDAE

EN

Flame Rivulus

Cynodonichthys uroflammeus

Unknown
CR

Campellolebias brucei

Unknown
CR

Hypsolebias gilbertobrasili

Unknown
CR

Kryptolebias campelloi

Unknown

Frequently asked questions

Why is Melanorivulus egens classified as Critically Endangered?
Melanorivulus egens 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. Melanorivulus egens faces severe threats from habitat destruction due to urban expansion and agricultural development in its restricted range in southeastern Brazil. Water pollution from agricultural runoff and urban waste significantly degrades the shallow freshwater environments this killifish depends on for survival. The species' extremely limited distribution makes it particularly vulnerable to localized environmental changes and human activities.
Where does Melanorivulus egens live?
Melanorivulus egens 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 Melanorivulus egens?
The main threats to Melanorivulus egens 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.