ENEndangered

Matilebias ibicuiensis

Unknown

Overview

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

Matilebias ibicuiensis faces severe threats from agricultural expansion and cattle ranching activities that destroy and fragment its specialized wetland habitats in the Ibicuí River basin. Water pollution from agricultural runoff and urban development further degrades the temporary pools and seasonal wetlands essential for this annual killifish's breeding cycle. Climate change poses an additional threat by altering precipitation patterns that could disrupt the delicate timing of pool formation and drying cycles critical to the species' reproductive success.
Threat summary

Habitat

This annual killifish inhabits temporary pools, seasonal wetlands, and shallow floodplains in the Ibicuí River basin of southern Brazil. The species depends on ephemeral water bodies that fill during rainy seasons and dry completely during drought periods, requiring specific hydroperiods for successful reproduction and egg development.

Other threatened species in RIVULIDAE

Flame Rivulus

Cynodonichthys uroflammeus

Unknown

Frequently asked questions

Why is Matilebias ibicuiensis classified as Endangered?

Matilebias ibicuiensis 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. Matilebias ibicuiensis faces severe threats from agricultural expansion and cattle ranching activities that destroy and fragment its specialized wetland habitats in the Ibicuí River basin. Water pollution from agricultural runoff and urban development further degrades the temporary pools and seasonal wetlands essential for this annual killifish's breeding cycle. Climate change poses an additional threat by altering precipitation patterns that could disrupt the delicate timing of pool formation and drying cycles critical to the species' reproductive success.

Where does Matilebias ibicuiensis live?

Matilebias ibicuiensis 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 Matilebias ibicuiensis?

The main threats to Matilebias ibicuiensis 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.