Brook Floater vs Tome's spiny rat

Alasmidonta varicosa compared with Proechimys semispinosus

Key Differences

• Brook Floater is Vulnerable while Tome's spiny rat is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Tome's spiny rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Mammalia (Mammals)
Order	Unionida (Unionida)	Rodentia (Rodents)
Family	Unionidae	Echimyidae
Genus	Alasmidonta	Proechimys
Species	Alasmidonta varicosa	Proechimys semispinosus

Evolutionary Relationship

Brook Floater and Tome's spiny rat share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Tome's spiny rat

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Tome's spiny rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Floater

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Tome's spiny rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador.

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.