Brook Floater vs Red Abalone

Alasmidonta varicosa compared with Haliotis rufescens

Key Differences

• Brook Floater is Vulnerable while Red Abalone is Critically Endangered.

Taxonomic Classification

Rank	Brook Floater	Red Abalone
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class	Bivalvia (Bivalvia)	Gastropoda (Gastropoda)
Order	Unionida (Unionida)	Lepetellida (Lepetellida)
Family	Unionidae	Haliotidae
Genus	Alasmidonta	Haliotis
Species	Alasmidonta varicosa	Haliotis rufescens

Evolutionary Relationship

Brook Floater and Red Abalone share a common ancestor at the Phylum level: Mollusca. (Mollusks)

Conservation Status

Brook Floater

VU — Vulnerable

Red Abalone

CR — Critically Endangered

Physical Characteristics

Attribute	Brook Floater	Red Abalone
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.

Red Abalone

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, temperate coniferous forests, and tropical and subtropical dry broadleaf forests, among 9 distinct biome types spanning the Indomalayan and Neotropic and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Chile, China, Norway, Peru, and Taiwan. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.