Brook Floater vs Amerika-aka-ei

Alasmidonta varicosa compared with Hypanus americanus

Key Differences

• Brook Floater is Vulnerable while Amerika-aka-ei is Near Threatened.

Taxonomic Classification

Rank	Brook Floater	Amerika-aka-ei
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Mollusca (軟体動物)	Chordata (脊索動物)
Class	Bivalvia (二枚貝)	Elasmobranchii
Order	Unionida (イシガイ目)	Myliobatiformes (トビエイ目)
Family	Unionidae	Dasyatidae
Genus	Alasmidonta	Hypanus
Species	Alasmidonta varicosa	Hypanus americanus

Evolutionary Relationship

Brook Floater and Amerika-aka-ei share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Brook Floater

VU — Vulnerable

Amerika-aka-ei

NT — Near Threatened

Physical Characteristics

Attribute	Brook Floater	Amerika-aka-ei
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.

Amerika-aka-ei

Habitat

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

Range

Found in Venezuela. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.