Broadbacked stingaree vs Coastal stingaree

Urolophus expansus compared with Urolophus orarius

Key Differences

• Broadbacked stingaree is Least Concern while Coastal stingaree is Endangered.

Taxonomic Classification

Rank	Broadbacked stingaree	Coastal stingaree
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class same	Elasmobranchii	Elasmobranchii
Order same	Myliobatiformes (อันดับปลากระเบน)	Myliobatiformes (อันดับปลากระเบน)
Family same	Urolophidae	Urolophidae
Genus same	Urolophus	Urolophus
Species	Urolophus expansus	Urolophus orarius

Evolutionary Relationship

Broadbacked stingaree and Coastal stingaree share a common ancestor at the Genus level: Urolophus.

Conservation Status

Broadbacked stingaree

LC — Least Concern

Coastal stingaree

EN — Endangered

Physical Characteristics

Attribute	Broadbacked stingaree	Coastal stingaree
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Broadbacked stingaree

The Broadbacked stingaree (Urolophus expansus) is a species in the genus Urolophus. It is currently classified as Least Concern on the IUCN Red List.

Coastal stingaree

Coastal stingaree (Urolophus orarius) is a small batoid ray in the family Urolophidae, endemic to shallow coastal waters of southern Australia, particularly along the coasts of South Australia, Victoria, and Tasmania. Like other stingarees, it has a rounded disc, a short tail armed with one or two venomous spines, and lacks a distinct rostrum. It inhabits sandy and muddy nearshore substrates in depths typically less than 30 metres, where it forages for polychaete worms, crustaceans, and small molluscs buried in the seabed. Females are ovoviviparous, giving birth to small litters of live young following internal development. Coastal stingaree is assessed as Endangered by the IUCN, driven by its restricted range, slow reproductive rate, and significant bycatch in inshore commercial and recreational fisheries operating across southern Australian coastal waters. Bottom trawling, prawn trawling, and gillnetting are identified as major threats. The species receives limited targeted conservation attention and is not currently the subject of specific fisheries management measures. Its small home range and coastal distribution make it especially vulnerable to localised fishery impacts.