The sixgill stingray (Hexatrygon bickelli) is a species of stingray and the only extant member of the family Hexatrygonidae. Although several species of sixgill stingrays have been described historically, they may represent variations in a single, widespread species.

The sixgill stingray (Hexatrygon bickelli) is a species of stingray and the only extant member of the family Hexatrygonidae. Although several species of sixgill stingrays have been described historically, they may represent variations in a single, widespread species.

Sixgill stingrays (Hexatrygonidae) are characterized by their six pairs of gill openings, which have gill arches with well-developed filaments. They are unique among rays in that their spiracles (respiratory openings) are closed with an external valve flap, rather than an internal valve.

The sixgill stingray (Hexatrygon bickelli) is a species of stingray and the only extant member of the family Hexatrygonidae. Although several species of sixgill stingrays have been described historically, they may represent variations in a single, widespread species.

The sixgill stingray (Hexatrygon bickelli) is a species of stingray and the only extant member of the family Hexatrygonidae. Although several species of sixgill stingrays have been described historically, they may represent variations in a single, widespread species.

A bizarre-looking flabby stingray with a long, thick, fleshy snout (Ref. 5578). Dark violet-blue or brownish above, white below (Ref. 5578 ). Biology Glossary (e.g. epibenthic)

A soft, extremely flabby stingray with a heart-shape disc, a broad-based, long and triangular snout, small widely-spaced eyes positioned well before the spiracles, 6 widely separate pairs of small gill slits, and the tail much shorter than the disc with 1 or 2 stings.

Unlike most rays, the sixgill stingray has six pairs of gill slits instead of the usual five. It has two spines on its long tail; a long, pointed snout, and rounded pectoral fins. It is found in ocean waters from South Africa eastward to Japan, Australia, and Hawaii. Status taken from ICUN Redlist.

Sixgill stingray is a species of Chondrichthyes in the order Myliobatiformes, the only modern representative of the genus Hexatrygon and the family Hexatrygonidae.

They are characterized by their flattened bodies and long tails, which are sometimes equipped with a defensive spine. There are eight different families of stingrays: sixgill, deepwater, stingarees, round rays, whiptail, river, butterfly, and eagle …