ANIMAL SPECIES:Shark Ray, Rhina ancylostoma Bloch & Schneider, 1801
The Shark Ray has distictive large thorns on the bony ridges on the head and has a quite attractive bluish grey colouring to it's surface. The species is generally found in tropical and subtropical coastal waters and offshore reefs, feeding on crabs and shellfish.
Identification
The Shark Ray is a very distinctive, deep-bodied fish. The upper surface is blue-grey with white spots. There is a large blue-edged, black blotch above each pectoral fin and dark bands between the eyes. This colouration is often not as distinct in large individuals which may only have faint markings.
Some of the most obvious features of this species are the wide, blunt snout, the large thorns on the bony ridges on the head and the large spiracles. The tail of this species is much longer than the disc.
The Shark Ray belongs in the family Rhinchobatidae (the guitarfishes). Two of the characters that separate the guitarfishes from other fishes are the well developed lower caudal fin lobe and the distinct demarcation between the head and pectoral fins.
In Australia the family Rhinchobatidae contains two species, the Shark Ray, and the White-spotted Guitarfish, Rhynchobatus djiddensis.
Size range
The Shark Ray grows to 3 m in length.Distribution
It occurs widely in the Indo-Pacific.
In Australia it is known from Exmouth Gulf, Western Australia to the central coast of New South Wales.
Distribution by collection data
Biomaps map of Shark Ray specimens in the Australian Museum collection.
Habitat
The species has been recorded from tropical and subtropical coastal waters and offshore reefs.
Behaviour and adaptations
Feeding and Diet
It uses its flattened pavement-like teeth to feed on crabs and shellfish.
Living with us
Danger to humans and first aid
The Shark Ray is not dangerous to humans.
Classification
- Species:
- ancylostoma
- Genus:
- Rhina
- Family:
- Rhinchobatidae
- Class:
- Chondrichthyes
- Subphylum:
- Vertebrata
- Phylum:
- Chordata
- Kingdom:
- Animalia
References
- Last, P.R. & J.D. Stevens. 1994. Sharks and Rays of Australia. CSIRO. Pp. 513, Pl. 1-84.
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A Shark Ray photographed at Sydney Aquarium View full size
Mark McGrouther
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