Bigeye thresher vs sea thread hydroid

Alopias pelagicus compared with Obelia dichotoma

Key Differences

• Bigeye thresher is Endangered while sea thread hydroid is Not Evaluated.

Taxonomic Classification

Rank	Bigeye thresher	sea thread hydroid
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Cnidaria (Cnidarians)
Class	Chondrichthyes (Cartilaginous Fish)	Hydrozoa (Hydrozoa)
Order	Lamniformes (Mackerel Sharks)	Leptothecata (Leptothecata)
Family	Alopiidae	Campanulariidae
Genus	Alopias	Obelia
Species	Alopias pelagicus	Obelia dichotoma

Evolutionary Relationship

Bigeye thresher and sea thread hydroid share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

sea thread hydroid

NE — Not Evaluated

Physical Characteristics

Attribute	Bigeye thresher	sea thread hydroid
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.

sea thread hydroid

Habitat

Native to Africa and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Africa (South Africa), Europe (5 countries), North America (Canada, Mexico, United States), Oceania and the Pacific (Australia), and South America (Argentina, Chile).

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.