Bigeye thresher vs Long-stalk Spiderhead

Alopias pelagicus compared with Serruria elongata

Key Differences

• Bigeye thresher is Endangered while Long-stalk Spiderhead is Near Threatened.

Taxonomic Classification

Rank	Bigeye thresher	Long-stalk Spiderhead
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Chondrichthyes (Cartilaginous Fish)	Magnoliopsida (Dicots)
Order	Lamniformes (Mackerel Sharks)	Proteales (Proteales)
Family	Alopiidae	Proteaceae
Genus	Alopias	Serruria
Species	Alopias pelagicus	Serruria elongata

Conservation Status

Bigeye thresher

EN — Endangered

Long-stalk Spiderhead

NT — Near Threatened

Physical Characteristics

Attribute	Bigeye thresher	Long-stalk Spiderhead
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.

Long-stalk Spiderhead

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.