Amazonian Marsh Rat vs Large-Neck Clam

Holochilus sciureus compared with Mya arenaria

Key Differences

Amazonian Marsh Rat is Least Concern while Large-Neck Clam is Vulnerable.

Taxonomic Classification

Rank	Amazonian Marsh Rat	Large-Neck Clam
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Bivalvia (Bivalvia)
Order	Rodentia (Rodents)	Myida (Myida)
Family	Cricetidae	Myidae
Genus	Holochilus	Mya
Species	Holochilus sciureus	Mya arenaria

Evolutionary Relationship

Amazonian Marsh Rat and Large-Neck Clam share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

Amazonian Marsh Rat

LC — Least Concern

Large-Neck Clam

VU — Vulnerable

Physical Characteristics

Attribute	Amazonian Marsh Rat	Large-Neck Clam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Amazonian Marsh Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

Large-Neck Clam

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and temperate grasslands and steppes, among 5 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Georgia, Turkey), Europe (22 countries), and North America (Canada, United States). 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.

Large-Neck Clam

Large-Neck Clam (Mya arenaria) is classified as Vulnerable (VU) on the IUCN Red List. Facing a high risk of endangerment in the wild, with declining populations and increasing habitat pressure.