Canadian beaver vs Coelacanth

Castor canadensis compared with Latimeria chalumnae

Key Differences

Canadian beaver is Not Evaluated while Coelacanth is Critically Endangered.
Canadian beaver is herbivore while Coelacanth is carnivore.
Coelacanth is 3.2x heavier than Canadian beaver.
Coelacanth lives longer (100 years vs 15 years).

Taxonomic Classification

Rank	Canadian beaver	Coelacanth
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Coelacanthi (Coelacanthi)
Order	Rodentia (ネズミ目)	Coelacanthiformes (シーラカンス)
Family	Castoridae (Beavers)	Latimeriidae
Genus	Castor (Beavers)	Latimeria
Species	Castor canadensis	Latimeria chalumnae

Evolutionary Relationship

Canadian beaver and Coelacanth share a common ancestor at the Phylum level: Chordata. (脊索動物)

表示 Phylum: Chordata

Conservation Status

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Coelacanth

CR — Critically Endangered

Population: ~500

Trend: Decreasing ↓

Physical Characteristics

Attribute	Canadian beaver	Coelacanth
Diet	Herbivore	Carnivore
Average Lifespan	15 years	100 years
Average Length	1.0 m	1.8 m
Average Weight	25.0 kg	80.0 kg

Habitat & Geographic Range

Canadian beaver

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

Widely distributed across Europe (15 countries), North America (United States), and South America (Argentina, Chile).

Coelacanth

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 8 distinct biome types spanning the Australasia and Afrotropic and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Comoros, Indonesia, Mozambique, and South Africa. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Canadian beaver

北米最大の齧歯類であるカナダビーバーは体重32kgにも達し、カナダ・米国北部の河川、湖沼、湿地に生息する優れた生態系エンジニアです。木を倒して数百メートルに及ぶダムを造ることで池を形成し、数百種の生息環境を提供します。その巣穴や運河は流域全体を変化させます。かつては毛皮のために絶滅寸前まで狩られましたが、個体数は大きく回復しています。

Coelacanth

1938年に南アフリカ沖で再発見されるまで6,500万年間絶滅していたと考えられていた生きた化石であるシーラカンスは、2メートル、90kgに達することができます。この種は条鰭類よりも四足動物に近い古代の肉鰭類の系統に属しており、脊椎動物の進化を理解する上で科学的に非常に重要です。インド洋の深い岩礁生息地に生息し、夜行性で体内受精により完全に形成された幼魚を産みます。絶滅危惧IA類（CR）種です。