Brook Floater vs ハッカチョウ

Alasmidonta varicosa compared with Acridotheres cristatellus

Key Differences

• Brook Floater is Vulnerable while ハッカチョウ is Least Concern.

Taxonomic Classification

Rank	Brook Floater	ハッカチョウ
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum	Mollusca (軟体動物)	Chordata (脊索動物)
Class	Bivalvia (二枚貝)	Aves (鳥類)
Order	Unionida (イシガイ目)	Passeriformes (スズメ目)
Family	Unionidae	Sturnidae
Genus	Alasmidonta	Acridotheres
Species	Alasmidonta varicosa	Acridotheres cristatellus

Evolutionary Relationship

Brook Floater and ハッカチョウ share a common ancestor at the Kingdom level: Animalia. (動物)

Conservation Status

Brook Floater

VU — Vulnerable

ハッカチョウ

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	ハッカチョウ
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.

ハッカチョウ

Habitat

Inhabits tropical and subtropical dry broadleaf forests and tropical and subtropical grasslands and savannas within the Neotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Japan, Singapore, United Arab Emirates), Europe (7 countries), and South America (Argentina, Bolivia).

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.

ハッカチョウ

カンムリハッカ（Acridotheres cristatellus）はIUCNレッドリストで軽度懸念（LC）に分類される。分布域全体で広く豊富に生息し、個体数は安定しており、即座の保全上の懸念はない。