Amazonian Marsh Rat vs Otter, Fischotter

Holochilus sciureus compared with Lutra lutra

Key Differences

Amazonian Marsh Rat is Least Concern while Otter, Fischotter is Vulnerable.

Taxonomic Classification

Rank	Amazonian Marsh Rat	Otter, Fischotter
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class same	Mammalia (Säugetiere)	Mammalia (Säugetiere)
Order	Rodentia (Nagetiere)	Carnivora (Raubtiere)
Family	Cricetidae	Mustelidae (Weasels & Otters)
Genus	Holochilus	Lutra (Otters)
Species	Holochilus sciureus	Lutra lutra

Evolutionary Relationship

Amazonian Marsh Rat and Otter, Fischotter share a common ancestor at the Class level: Mammalia. (Säugetiere)

Ansehen Class: Mammalia

Conservation Status

Amazonian Marsh Rat

LC — Least Concern

Otter, Fischotter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Amazonian Marsh Rat	Otter, Fischotter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

Amazonian Marsh Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

Otter, Fischotter

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Amazonian Marsh Rat

The Amazonian Marsh Rat (Holochilus sciureus) is a species in the genus Holochilus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Otter, Fischotter

Sleek semi-aquatic mustelid found along clean rivers, streams, and coastlines across Europe and Asia. European otters can reach 1.3 meters in length and are highly skilled fish hunters, using sensitive whiskers to detect prey movements. Requiring unpolluted water with abundant fish, they are an indicator species for freshwater ecosystem health. Once nearly extinct in Western Europe from hunting and pollution, populations have recovered significantly following water quality improvements.