Blotched Fantail Ray

Overview

The Blotched Fantail Ray is a large, bottom-dwelling stingray characterized by its thick, circular disc and mottled black-and-white dorsal pattern. It is widely distributed across the tropical and subtropical waters of the Indo-Pacific, where it is frequently encountered in lagoons, estuaries, and along coral reef slopes.

Distribution & habitat

This species inhabits the Indo-West Pacific, ranging from the Red Sea and East Africa to southern Japan, Micronesia, and tropical Australia. While it is primarily a benthic inhabitant of shallow coastal waters and reefs, it has been recorded at depths ranging from near the surface down to 500 meters.

Appearance

Reaching significant sizes, this ray features a broadly rounded snout and a relatively short, whip-like tail equipped with a venomous spine. Its dorsal surface is typically grey, brown, or olive with dark, marbled blotches, while the ventral side is pale. A distinguishing feature is the prominent, deep skin fold located on the underside of the tail, which extends to the very tip.

Biology & behavior

Primarily nocturnal, these rays are often found resting motionless on the sandy seafloor or under reef ledges during the day. While generally non-aggressive, they will defend themselves if provoked by raising their tail to expose the venomous barb. They are known to be solitary or gregarious and may occasionally be seen accompanied by other fish species like jacks or cobia.

Feeding

To locate prey hidden in the substrate, the Blotched Fantail Ray uses a specialized technique of blowing water from its mouth to excavate holes in the sand. Its diet consists of benthic organisms, including mollusks, crustaceans, bivalves, and small bottom-dwelling fishes.