The longtail stingray (Dasyatis thetidis) goes by many multiple names, including the thorntail stingray and black stingray. They are seen swimming in southern African waters, Australia, and New Zealand to depths as deep as 440 m (1,440 ft), and like lagoons, estuaries, and reefs. They can get to be pretty big: some measure up to 1.8 m (5.9 ft) across and weigh more than 200 kg (440 lb), making it one of the largest stingrays worldwide. A pretty neat title to have, if we say so ourselves.
It's diamond-shape is black/dark brown on the dorsal side, a creamy underbelly, and a long tail (hence the common name). The dorsal side, and along the tail, bear sharp thorns for protection. And while they have a venomous spine, they are not aggressive towards humans!
The longtail stingray prefers benthic invertebrates and bony fishes to eat. And in the summer, which is fast approaching for the Southern Hemisphere, they like to gather in groups (be on the look out in your harbours). Like other stingrays, it is ovoviviparous. #Finfact: Embryos get fed histotroph ("uterine milk") produced by momma stingray.
They are caught by commercial and recreational fishers, but little else is known about their population so the IUCN has listed this species as Data Deficient (DD).
ever heard of this stingray?
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