Atlantic Humpbacked Dolphin vs Common ray

Sousa teuszii compared with Telatrygon biasa

Key Differences

• Atlantic Humpbacked Dolphin is Critically Endangered while Common ray is Vulnerable.

Taxonomic Classification

Rank	Atlantic Humpbacked Dolphin	Common ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Myliobatiformes (Myliobatiformes)
Family	Delphinidae (Oceanic Dolphins)	Dasyatidae
Genus	Sousa	Telatrygon
Species	Sousa teuszii	Telatrygon biasa

Evolutionary Relationship

Atlantic Humpbacked Dolphin and Common ray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Atlantic Humpbacked Dolphin

CR — Critically Endangered

Common ray

VU — Vulnerable

Physical Characteristics

Attribute	Atlantic Humpbacked Dolphin	Common ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atlantic Humpbacked Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Common ray

Atlantic Humpbacked Dolphin

The Atlantic Humpbacked Dolphin (Sousa teuszii) is a species in the genus Sousa. It is currently classified as Critically Endangered on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

Common ray

<em>Telatrygon biasa</em>, the common ray, is a cartilaginous fish in the family Dasyatidae, order Myliobatiformes, belonging to the broader class Chondrichthyes. The species is assessed as Vulnerable on the IUCN Red List, indicating elevated concern over population viability. Common rays are demersal elasmobranchs typically found in shallow coastal and inshore marine habitats, resting on sandy or muddy substrates. Like other dasyatid stingrays, <em>Telatrygon biasa</em> typically feeds on benthic invertebrates including crustaceans, mollusks, and worms, which it detects using electroreceptive ampullae of Lorenzini. It typically moves by undulating its broad pectoral disc, a hallmark locomotion style of stingrays. The vulnerable status of this species likely reflects pressures from bycatch in coastal fisheries and habitat degradation, which are common threats for inshore ray species across the Indo-Pacific region. Biological traits such as lifespan, precise body measurements, and detailed diet composition remain poorly documented for this taxon, and further field research is needed to characterize population structure and reproductive ecology. Conservation measures targeting bycatch reduction in artisanal and commercial fisheries would benefit this species.