Round ribbontail ray
The round ribbontail ray has a wide distribution in the Indo-Pacific region: it is found from KwaZulu_Natal in South Africa northward along the East African coast to the Red Sea, including Madagascar and the Mascarenes; from there, its range extends eastward through the Indian subcontinent to Southeast Asia and Micronesia, occurring as far north as Korea and southern Janan and as far south as Australia.
Similan islands fish guide: Round ribbontail ray
Two round marbled stingrays hanging out at the Similan islands