The Ecuador fish-eating rat is a small rodent adapted to aquatic life. Records are sparse: the species was known from central Ecuador before one individual was reported from the Colombian highlands.
The university article describes modified feet associated with aquatic life and an absence of external ears.
It is described as nocturnal and as feeding on small fish and some aquatic insects. The Colombian specimen was found dead, so its behavior could not be observed.
An extinction-risk assessment has not been added yet.