Bigeye thresher vs slender thistle

Alopias pelagicus compared with Carduus tenuiflorus

Key Differences

• Bigeye thresher is Endangered while slender thistle is Near Threatened.

Taxonomic Classification

Rank	Bigeye thresher	slender thistle
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Chondrichthyes (Cartilaginous Fish)	Magnoliopsida (Dicots)
Order	Lamniformes (Mackerel Sharks)	Asterales (Daisies & Sunflowers)
Family	Alopiidae	Asteraceae (Daisy Family)
Genus	Alopias	Carduus
Species	Alopias pelagicus	Carduus tenuiflorus

Conservation Status

Bigeye thresher

EN — Endangered

slender thistle

NT — Near Threatened

Physical Characteristics

Attribute	Bigeye thresher	slender thistle
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.

slender thistle

Habitat

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

Range

Widely distributed across Africa (South Africa), Asia (Japan), Europe (7 countries), North America (United States), Oceania and the Pacific (Australia), and South America (Argentina, Brazil, Chile). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.