Tweedy's crab-eating rat

{{Short description|Species of rodent}}

{{speciesbox

| name = Tweedy's crab-eating rat

| status = DD | status_system = IUCN3.1

| status_ref = {{cite iucn |author=Boada, C. |author2=Pino, J. |author3=Tirira, D.G. |date=2019 |title=Ichthyomys tweedii |volume=2019 |page=e.T10764A22384770 |doi=10.2305/IUCN.UK.2019-1.RLTS.T10764A22384770.en |access-date=14 November 2021}}

| genus = Ichthyomys

| species = tweedii

| authority = Anthony, 1921

| synonyms =

}}

Tweedy's crab-eating rat (Ichthyomys tweedii) is a species of rodent in the family Cricetidae.{{MSW3 Muroidea | id = 13000673 | page = 1120}}

It is found in two disjointed regions in western Ecuador and central Panama. The species is found near fast-flowing streams in primary and secondary forest, and is known from elevations of 900 to 1700 m. It is presumed that like other members of its genus, it nocturnal and semiaquatic, and feeds on freshwater invertebrates, such as crabs. This rodent is threatened by habitat destruction and water pollution.