Ko-nanukazame vs Cook’s swellshark

Cephaloscyllium sarawakensis compared with Cephaloscyllium cooki

Key Differences

• Ko-nanukazame is Critically Endangered while Cook’s swellshark is Data Deficient.

Taxonomic Classification

Rank	Ko-nanukazame	Cook’s swellshark
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class same	Chondrichthyes (軟骨魚綱)	Chondrichthyes (軟骨魚綱)
Order same	Carcharhiniformes (メジロザメ目)	Carcharhiniformes (メジロザメ目)
Family same	Scyliorhinidae	Scyliorhinidae
Genus same	Cephaloscyllium	Cephaloscyllium
Species	Cephaloscyllium sarawakensis	Cephaloscyllium cooki

Evolutionary Relationship

Ko-nanukazame and Cook’s swellshark share a common ancestor at the Genus level: Cephaloscyllium.

Conservation Status

Ko-nanukazame

CR — Critically Endangered

Cook’s swellshark

DD — Data Deficient

Physical Characteristics

Attribute	Ko-nanukazame	Cook’s swellshark
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Ko-nanukazame

Habitat

Inhabits tropical and subtropical moist broadleaf forests within the Indomalayan biogeographic realm.

Range

Found in Taiwan. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Cook’s swellshark

Habitat

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

Ko-nanukazame

The Balloon shark (Cephaloscyllium sarawakensis) is a species in the genus Cephaloscyllium. It is currently classified as Critically Endangered on the IUCN Red List. Inhabits tropical and subtropical moist broadleaf forests within the Indomalayan biogeographic realm.