Bigeye thresher vs chestnut worm

Alopias pelagicus compared with Lumbricus castaneus

Key Differences

• Bigeye thresher is Endangered while chestnut worm is Not Evaluated.

Taxonomic Classification

Rank	Bigeye thresher	chestnut worm
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Annelida (Segmented Worms)
Class	Chondrichthyes (Cartilaginous Fish)	Clitellata (Clitellata)
Order	Lamniformes (Mackerel Sharks)	Crassiclitellata (Crassiclitellata)
Family	Alopiidae	Lumbricidae
Genus	Alopias	Lumbricus
Species	Alopias pelagicus	Lumbricus castaneus

Evolutionary Relationship

Bigeye thresher and chestnut worm share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

chestnut worm

NE — Not Evaluated

Physical Characteristics

Attribute	Bigeye thresher	chestnut worm
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.

chestnut worm

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

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.

chestnut worm

The chestnut worm (Lumbricus castaneus) is a species in the genus Lumbricus. Native to Europe and North America, inhabiting ecosystems characteristic of the region.