Bishop ray vs Canadian beaver

Aetobatus narinari compared with Castor canadensis

Key Differences

• Bishop ray is Near Threatened while Canadian beaver is Not Evaluated.

Taxonomic Classification

Rank	Bishop ray	Canadian beaver
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Elasmobranchii	Mammalia (哺乳動物)
Order	Myliobatiformes (鱝目)	Rodentia (啮齿目)
Family	Myliobatidae	Castoridae (Beavers)
Genus	Aetobatus	Castor (Beavers)
Species	Aetobatus narinari	Castor canadensis

Evolutionary Relationship

Bishop ray and Canadian beaver share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Bishop ray

NT — Near Threatened

Canadian beaver

NE — Not Evaluated

Population: ~15.0M

Trend: Stable →

Physical Characteristics

Attribute	Bishop ray	Canadian beaver
Diet	—	Herbivore
Average Lifespan	—	15 years
Average Length	—	1.0 m
Average Weight	—	25.0 kg

Habitat & Geographic Range

Bishop ray

Habitat

Native to Asia and South America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Colombia, Taiwan, and Venezuela. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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).

Bishop ray

The Bishop ray (Aetobatus narinari) is a species in the genus Aetobatus. It is currently classified as Near Threatened on the IUCN Red List. Native to Asia and South America, inhabiting ecosystems characteristic of the region.

Canadian beaver

北美最大的啮齿动物加拿大河狸体重可达32公斤，是栖息于加拿大和美国北部河流、湖泊和湿地的杰出生态系统工程师。通过伐木和建造可达数百米的水坝形成水塘，为数百种物种提供生境。其巢穴和运河改变了整个流域。曾因毛皮贸易被猎杀至濒临灭绝，但种群已大幅恢复。