Common ray vs Porter s Rock Rat

Telatrygon biasa compared with Aconaemys porteri

Key Differences

• Common ray is Vulnerable while Porter s Rock Rat is Data Deficient.

Taxonomic Classification

Rank	Common ray	Porter s Rock Rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Rodentia (Rodents)
Family	Dasyatidae	Octodontidae
Genus	Telatrygon	Aconaemys
Species	Telatrygon biasa	Aconaemys porteri

Evolutionary Relationship

Common ray and Porter s Rock Rat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common ray

VU — Vulnerable

Porter s Rock Rat

DD — Data Deficient

Physical Characteristics

Attribute	Common ray	Porter s Rock Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common ray

Porter s Rock Rat

Habitat

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.