Brook Floater vs Common Goldenring

Alasmidonta varicosa compared with Cordulegaster boltonii

Key Differences

• Brook Floater is Vulnerable while Common Goldenring is Endangered.

Taxonomic Classification

Rank	Brook Floater	Common Goldenring
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Arthropoda (Arthropods)
Class	Bivalvia (Bivalvia)	Insecta (Insects)
Order	Unionida (Unionida)	Odonata (Odonata)
Family	Unionidae	Cordulegastridae
Genus	Alasmidonta	Cordulegaster
Species	Alasmidonta varicosa	Cordulegaster boltonii

Evolutionary Relationship

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

Conservation Status

Brook Floater

VU — Vulnerable

Common Goldenring

EN — Endangered

Physical Characteristics

Attribute	Brook Floater	Common Goldenring
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.

Common Goldenring

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Found across Europe (6 countries). Currently classified as 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.

Common Goldenring

Common Goldenring (Cordulegaster boltonii) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.