Yellow Isthmus Rat
Isthmomys flavidus
Red List assessment
Near Threatenedon the IUCN Red List
- EXExtinct
- EWExtinct in the Wild
- CRCritically Endangered
- ENEndangered
- VUVulnerable
- NTNear Threatened
- LCLeast Concern
The IUCN Red List assesses the Yellow Isthmus Rat as Near Threatened.
- Genus
- Isthmomys
- Red List category
- Near Threatened
- Data updated
- August 9, 2026
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The Yellow Isthmus Rat is one of the mammals assessed by the IUCN Red List, so it has a page here — with its scientific name, Isthmomys flavidus, its conservation category and, where one is known, a recorded observation on the map. What is missing is the rest: habitat, distribution, diet, behaviour, threats and the conservation work under way.
Each profile is researched and checked one species at a time, and there are thousands to go. You can put this one at the front of the queue.
In the meantime, the full assessment is on the IUCN Red List.
Questions about the Yellow Isthmus Rat
Is the Yellow Isthmus Rat endangered?
The IUCN Red List assesses the Yellow Isthmus Rat as Near Threatened. The species does not qualify as threatened today, but it is close to the thresholds and likely to cross them soon. It is the category that most often changes at the next assessment.
What is the scientific name of the Yellow Isthmus Rat?
The Yellow Isthmus Rat is Isthmomys flavidus.
Other species in the genus Isthmomys
Sources
Conservation status, range description and population estimate come from the IUCN Red List assessment for Isthmomys flavidus. Countries are derived from that range description, not from a mapped country list. Last refreshed on .
The distribution map is drawn from the IUCN Red List spatial data compiled in 2018. IUCN SSC Small Mammal Specialist Group