Brown catshark vs Epaulard

Bythaelurus lutarius compared with Orcinus orca

Taxonomic Classification

Rank	Brown catshark	Epaulard
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Chondrichthyes (軟骨魚綱)	Mammalia (哺乳類)
Order	Carcharhiniformes (メジロザメ目)	Cetacea (Whales & Dolphins)
Family	Scyliorhinidae	Delphinidae (Oceanic Dolphins)
Genus	Bythaelurus	Orcinus (Orcas)
Species	Bythaelurus lutarius	Orcinus orca

Evolutionary Relationship

Brown catshark and Epaulard share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Brown catshark

DD — Data Deficient

Epaulard

DD — Data Deficient

Population: ~50.0K

Trend: Unknown ?

Physical Characteristics

Attribute	Brown catshark	Epaulard
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	8.0 m
Average Weight	—	5.4 t

Habitat & Geographic Range

Brown catshark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Epaulard

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 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador, Venezuela).

Brown catshark

The Brown Catshark (Bythaelurus lutarius) is a species in the genus Bythaelurus. It is currently classified as Data Deficient on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Epaulard

イルカ科で最大の種であるシャチ（Orcinus orca）は体長最大9メートル、体重6トンに達し、北極から南極まですべての海洋に生息しています。独特の方言、狩猟戦略、集団間で異なる文化的伝統を持つ母系ポッドで生活する頂点捕食者です。一部の集団は魚類を、他の集団は海洋哺乳類を専門に捕食します。天敵はなく、シャチは生息するすべての海洋食物連鎖の頂点に位置します。