description Estuary Stingray Overview
The Estuary Stingray (Hemitrygon flavius) is a vulnerable whiptail stingray species endemic to the coastal waters, estuaries, and rivers of eastern Australia, from Queensland to New South Wales. Originally described by James Douglas Ogilby in 1908, it reaches a disc width of around 120 cm and inhabits soft-bottom habitats where it feeds on crustaceans and mollusks. Populations have declined due to habitat degradation, bartramper bycatch, and coastal development.
help Estuary Stingray FAQ
What is the correct scientific name for the Estuary Stingray?
The current accepted name is Hemitrygon fluviorum, described by James Douglas Ogilby in 1908, not Hemitrygon flavius. Older references use Dasyatis fluviorum, the species' former genus.
Where does the Estuary Stingray live?
It is endemic to eastern and northern Australia and favors shallow estuaries, mangrove-lined tidal rivers, and sheltered bays. Records extend from Queensland waters toward New South Wales, including the east coast range described by Australian fisheries references.
Why is the Estuary Stingray listed as vulnerable?
It is a habitat specialist, so foreshore development, mangrove loss, pollution, and fishing bycatch can reduce its usable habitat. The IUCN lists Hemitrygon fluviorum as Vulnerable.
How can I identify an Estuary Stingray?
Look for a yellow-brown to olive ray with a diamond-shaped disc, a long whip-like tail, and a row of thorns along the midline of its back. Australian Museum references describe the species as reaching around 130 cm in length.
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