Brook Floater vs Napo Spiny-rat

Alasmidonta varicosa compared with Proechimys quadruplicatus

Key Differences

• Brook Floater is Vulnerable while Napo Spiny-rat is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Napo Spiny-rat
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum	Mollusca (มอลลัสกา)	Chordata (สัตว์มีแกนสันหลัง)
Class	Bivalvia (ชั้นไบวาลเวีย)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Unionida (Unionida)	Rodentia (อันดับสัตว์ฟันแทะ)
Family	Unionidae	Echimyidae
Genus	Alasmidonta	Proechimys
Species	Alasmidonta varicosa	Proechimys quadruplicatus

Evolutionary Relationship

Brook Floater and Napo Spiny-rat share a common ancestor at the Kingdom level: Animalia. (สัตว์)

Conservation Status

Brook Floater

VU — Vulnerable

Napo Spiny-rat

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Napo 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.

Napo Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

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.