Arrow-head tree snail vs Bigeye thresher

Partula sagitta compared with Alopias pelagicus

Key Differences

• Arrow-head tree snail is Extinct while Bigeye thresher is Endangered.

Taxonomic Classification

Rank	Arrow-head tree snail	Bigeye thresher
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Chondrichthyes (Cartilaginous Fish)
Order	Stylommatophora (Stylommatophora)	Lamniformes (Mackerel Sharks)
Family	Partulidae	Alopiidae
Genus	Partula	Alopias
Species	Partula sagitta	Alopias pelagicus

Evolutionary Relationship

Arrow-head tree snail and Bigeye thresher share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Arrow-head tree snail

EX — Extinct

Bigeye thresher

EN — Endangered

Physical Characteristics

Attribute	Arrow-head tree snail	Bigeye thresher
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arrow-head tree snail

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

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.

Arrow-head tree snail

The Arrow-head tree snail, Partula sagitta, is a species. It is currently assessed as extinct on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

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.