ENEndangered
Arenal Rivulus
Cynodonichthys fuscolineatus
Unknown
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Habitat
Marine neritic· major
Conservation measures underway
Site/area protection
Other threatened species in RIVULIDAE
Threatened in Costa Rica
Frequently asked questions
Why is Arenal Rivulus classified as Endangered?
Arenal Rivulus 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, per the IUCN Red List assessment recorded in the SpeciesRadar database.
Where does Arenal Rivulus live?
Arenal Rivulus occurs in Costa Rica. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Arenal Rivulus?
The main threats to Arenal Rivulus are 1.1, 2.1, 2.3, and 3.2. The full IUCN-classified threat record for this species is detailed on the species page.
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