Peixe-anual
Austrolebias nigrofasciatus
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Austrolebias nigrofasciatus faces severe habitat loss due to agricultural expansion and urban development across its limited range in southern Brazil and Uruguay. The species' dependence on temporary wetlands makes it particularly vulnerable to drainage for cattle ranching and rice cultivation. Climate change poses an additional threat by altering precipitation patterns that are critical for the seasonal flooding cycles these annual killifish require for reproduction.
Habitat
This annual killifish inhabits temporary pools, seasonal wetlands, and shallow marshes in the Pampas region of southern Brazil and Uruguay. The species depends on ephemeral water bodies that fill during rainy seasons and dry completely during drought periods, requiring drought-resistant eggs that can survive in dried sediment.
Other threatened species in Rivulidae
Threatened in Brazil
Frequently asked questions
Why is Peixe-anual classified as Endangered?
Where does Peixe-anual live?
What are the main threats to Peixe-anual?
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