Bigeye thresher vs Bigtooth river stingray

Alopias pelagicus compared with Potamotrygon henlei

Key Differences

• Bigeye thresher is Endangered while Bigtooth river stingray is Least Concern.

Taxonomic Classification

Rank	Bigeye thresher	Bigtooth river stingray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Elasmobranchii
Order	Lamniformes (Mackerel Sharks)	Myliobatiformes (Myliobatiformes)
Family	Alopiidae	Potamotrygonidae
Genus	Alopias	Potamotrygon
Species	Alopias pelagicus	Potamotrygon henlei

Evolutionary Relationship

Bigeye thresher and Bigtooth river stingray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Bigeye thresher

EN — Endangered

Bigtooth river stingray

LC — Least Concern

Physical Characteristics

Attribute	Bigeye thresher	Bigtooth river stingray
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.

Bigtooth river stingray

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.

Bigtooth river stingray

The Bigtooth river stingray (Potamotrygon henlei) is a species in the genus Potamotrygon. It is currently classified as Least Concern on the IUCN Red List.