Chinese Blackish stingray

The blackish stingray has a diamond-shaped pectoral fin disc almost as long as wide, with slightly sinuous leading margins, narrowly rounded outer corners, and almost straight trailing margins. The triangular, projecting snout comprises about one-fourth the disc length and bears 2–3 rows of enlarged pores along the midline. The eyes are small and closely followed by a pair of larger spiracles. The mouth is bow-shaped, with three papillae across the floor. There are 40 upper tooth rows and 37 lower tooth rows; the teeth of adult males are pointed while those of juveniles and females are blunt. The tail is whip-like and bears a stinging spine on the dorsal surface, as well as both upper and lower fin folds; the ventral fold measures half the disc length. There are 4–6 rows of small tubercles between the eyes, a narrow strip of tubercles running down the center of back to the base of the tail, and three enlarged tubercles in front of the tail spine. The coloration is a plain dark brown above and whitish below. This species attains a disc width of 38 cm (15 in) and a total length of 60–94 cm (24–37 in)

The blackish stingray is found in the Yellow, Bohai, and East China Seas, to as far south as Taiwan. This bottom-dwelling species is found in coastal waters, and has been recorded from the estuary of the Yellow River.

Little is known of the natural history of the blackish stingray. Known parasites of this species include the copepod Caligus dasyaticus and the monogenean Heterocotyle chinensis. It is presumably aplacental viviparous like other members of its family.