Smithsonian National Museum of Natural History, North American Mammals
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Rheomys mexicanus

Mexican Ichthyomyine

Order: Rodentia
Family: Cricetidae


Conservation Status: Endangered.

Water mice live in tropical forests, spending their time in or close to small, fast-flowing streams. They eat aquatic insect larvae, may also eat snails, and also consume fish. One individual had the remains of catfish in its stomach, and captives willingly ate sardines. These mice have streamlined bodies and short, soft, dense fur. Their front legs are short and their large hind feet have webbing between the toes.

Also known as:
Goodwins Water Mouse

Range: Head and Body: 92-142 mm Tail: 88-171 mm


Goodwin, G.G., 1959. American Museum Novitates, 1967:4.


Mammal Species of the World

Distribution of Rheomys mexicanus