Dasyatidae

Dwarf Black Stingray

Hemitrygon parvonigra

Midline thorns and twin tail folds

• Black
• Tropical
• Regional distribution
• Indian Ocean
• Pacific Ocean
• Oceania
• Southeast Asia
• Large
• Tropical fish

The dwarf black stingray (Hemitrygon parvonigra) is a little-known species of stingray in the family Dasyatidae, found off northwestern Australia and perhaps throughout Southeast Asia at depths of 60–185 m (197–607 ft). Growing to a width of 51 cm (20 in), this species is characterized by an angular, diamond-shaped pectoral fin disc with a short row of spear-like thorns along the midline of the back and few dermal denticles elsewhere. Its tail bears a long fin fold along the bottom and a much shorter ridge along the top, both past the stinging spine.