Brook Floater vs Longhorned Pygmy Devil Ray

Alasmidonta varicosa compared with Mobula eregoodoo

Key Differences

• Brook Floater is Vulnerable while Longhorned Pygmy Devil Ray is Endangered.

Taxonomic Classification

Rank	Brook Floater	Longhorned Pygmy Devil Ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Elasmobranchii
Order	Unionida (Unionida)	Myliobatiformes (Myliobatiformes)
Family	Unionidae	Myliobatidae
Genus	Alasmidonta	Mobula
Species	Alasmidonta varicosa	Mobula eregoodoo

Evolutionary Relationship

Brook Floater and Longhorned Pygmy Devil Ray share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Longhorned Pygmy Devil Ray

EN — Endangered

Physical Characteristics

Attribute	Brook Floater	Longhorned Pygmy Devil Ray
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.

Longhorned Pygmy Devil Ray

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.