Bartail spurdog vs Brown eagle-ray

Squalus notocaudatus compared with Aetomylaeus milvus

Key Differences

• Bartail spurdog is Least Concern while Brown eagle-ray is Endangered.

Taxonomic Classification

Rank	Bartail spurdog	Brown eagle-ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Elasmobranchii	Elasmobranchii
Order	Squaliformes (Squaliformes)	Myliobatiformes (Myliobatiformes)
Family	Squalidae	Myliobatidae
Genus	Squalus	Aetomylaeus
Species	Squalus notocaudatus	Aetomylaeus milvus

Evolutionary Relationship

Bartail spurdog and Brown eagle-ray share a common ancestor at the Class level: Elasmobranchii.

Conservation Status

Bartail spurdog

LC — Least Concern

Brown eagle-ray

EN — Endangered

Physical Characteristics

Attribute	Bartail spurdog	Brown eagle-ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bartail spurdog

Brown eagle-ray

Habitat

Native to Asia, inhabiting ecosystems characteristic of the region.

Range

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

Bartail spurdog

The Bartail spurdog (Squalus notocaudatus) is a species in the genus Squalus. It is currently classified as Least Concern on the IUCN Red List.

Brown eagle-ray

The Brown Eagle-ray (Aetomylaeus milvus) is a species in the genus Aetomylaeus. It is currently classified as Endangered on the IUCN Red List. Native to Asia, inhabiting ecosystems characteristic of the region.