Bigeye thresher vs eccentric grass snail

Alopias pelagicus compared with Vallonia excentrica

Key Differences

• Bigeye thresher is Endangered while eccentric grass snail is Near Threatened.

Taxonomic Classification

Rank	Bigeye thresher	eccentric grass snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Chondrichthyes (Cartilaginous Fish)	Gastropoda (Gastropoda)
Order	Lamniformes (Mackerel Sharks)	Stylommatophora (Stylommatophora)
Family	Alopiidae	Valloniidae
Genus	Alopias	Vallonia
Species	Alopias pelagicus	Vallonia excentrica

Evolutionary Relationship

Bigeye thresher and eccentric grass snail share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Bigeye thresher

EN — Endangered

eccentric grass snail

NT — Near Threatened

Physical Characteristics

Attribute	Bigeye thresher	eccentric grass snail
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.

eccentric grass snail

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 5 distinct biome types spanning the Australasia and Oceanian and Palearctic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Israel), Europe (9 countries), North America (Mexico, United States), and Oceania and the Pacific (New Zealand). 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.