Bigeye thresher vs thin-necked bladderworm

Alopias pelagicus compared with Taenia hydatigena

Key Differences

• Bigeye thresher is Endangered while thin-necked bladderworm is Not Evaluated.

Taxonomic Classification

Rank	Bigeye thresher	thin-necked bladderworm
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Platyhelminthes (Platyhelminthes)
Class	Chondrichthyes (Cartilaginous Fish)	Cestoda (Cestoda)
Order	Lamniformes (Mackerel Sharks)	Cyclophyllidea (Cyclophyllidea)
Family	Alopiidae	Taeniidae
Genus	Alopias	Taenia
Species	Alopias pelagicus	Taenia hydatigena

Evolutionary Relationship

Bigeye thresher and thin-necked bladderworm share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

thin-necked bladderworm

NE — Not Evaluated

Physical Characteristics

Attribute	Bigeye thresher	thin-necked bladderworm
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Bigeye thresher

Habitat

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

Range

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

thin-necked bladderworm

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Norway, Portugal, and Sweden.

Bigeye thresher

The Bigeye thresher (Alopias pelagicus) is a species in the genus Alopias. It is currently classified as Endangered on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.