Brook Floater vs Rock Grayling

Alasmidonta varicosa compared with Hipparchia hermione

Key Differences

• Brook Floater is Vulnerable while Rock Grayling is Not Evaluated.

Taxonomic Classification

Rank	Brook Floater	Rock Grayling
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Lepidoptera (Butterflies & Moths)
Family	Unionidae	Nymphalidae (Brush-footed Butterflies)
Genus	Alasmidonta	Hipparchia
Species	Alasmidonta varicosa	Hipparchia hermione

Evolutionary Relationship

Brook Floater and Rock Grayling share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Rock Grayling

NE — Not Evaluated

Physical Characteristics

Attribute	Brook Floater	Rock Grayling
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.

Rock Grayling

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (19 countries).

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.