''Ichthyomys'' is a genus of

semiaquatic In biology, semiaquatic can refer to various types of animals that spend part of their time in water, or plants that naturally grow partially submerged in water. Examples are given below. Semiaquatic animals Semiaquatic animals include: * Verte ...

Neotropical The Neotropical realm is one of the eight biogeographic realms constituting Earth's land surface. Physically, it includes the tropical terrestrial ecoregions of the Americas and the entire South American temperate zone. Definition In bioge ...

rodent Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are na ...

s in the family

Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and New World rats and mice. At almost 608 species, it is the second-largest family of mammals, and has m ...

. It contains the following species: *

Crab-eating rat The crab-eating rat (''Ichthyomys hydrobates'') is a species of semiaquatic rodent in the family Cricetidae. It is found in Colombia, Ecuador, and Venezuela. Its natural habitats are rivers and swamp A swamp is a forested wetland.Keddy, P.A. ...

(''Ichthyomys hydrobates'') *

Pittier's crab-eating rat Pittier's crab-eating rat (''Ichthyomys pittieri'') is a species of semiaquatic rodent in the family Cricetidae. It is endemic to Venezuela. The natural habitats of this species are rivers and swamps. Its karyotype has 2n = 92 and FNa = 98. T ...

(''I. pittieri'') *

Stolzmann's crab-eating rat Stolzmann's crab-eating rat (''Ichthyomys stolzmanni'') is a species of rodent in the family Cricetidae. It is found in Ecuador and Peru. The species is believed to be nocturnal and semiaquatic In biology, semiaquatic can refer to various ty ...

(''I. stolzmanni'') *

Tweedy's crab-eating rat Tweedy's crab-eating rat (''Ichthyomys tweedii'') is a species of rodent in the family Cricetidae. It is found in two disjoint regions in western Ecuador and central Panama. The species is found near fast-flowing streams in primary and secondary f ...

(''I. tweedii'') Members of the genus tend to be nocturnal and live along fast-flowing streams, where they feed on freshwater invertebrates such as

crabs Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) ( el, βραχύς , translit=brachys = short, / = tail), usually hidden entirely under the thorax. They live in all the ...

References

Rodent genera Taxa named by Oldfield Thomas Taxonomy articles created by Polbot {{Sigmodontinae-stub