Brook Floater vs Ruddy Darter

Alasmidonta varicosa compared with Sympetrum sanguineum

Key Differences

• Brook Floater is Vulnerable while Ruddy Darter is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Ruddy Darter
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Mollusca (軟体動物)	Arthropoda (節足動物)
Class	Bivalvia (二枚貝)	Insecta (昆虫)
Order	Unionida (イシガイ目)	Odonata (蜻蛉目)
Family	Unionidae	Libellulidae
Genus	Alasmidonta	Sympetrum
Species	Alasmidonta varicosa	Sympetrum sanguineum

Evolutionary Relationship

Brook Floater and Ruddy Darter share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Brook Floater

VU — Vulnerable

Ruddy Darter

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Ruddy Darter
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.

Ruddy Darter

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Luxembourg, Norway, and Sweden.

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.

Ruddy Darter

Ruddy Darter（Sympetrum sanguineum）は IUCN レッドリストで軽度懸念（LC）に分類されている。分布域全体に広く分布し個体数も豊富で、個体群は安定しており差し迫った保全上の懸念はない。