Diagnostic Description
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Description: A large stingray; disc rhombic, its anterior margins forming an obtuse angle (Ref. 81259). Dorsal surface partially rough, with scattered dermal denticles, more concentrated on head and trunk; an irregular mid-dorsal row of backward-pointing thorny tubercles with oval bases embedded in the skin, as well as two parallel scapular segments of small, irregular tubercles (Ref. 81259). Tail whip-like and spinous behind the sting, with a dorsal ridge and a well developed ventral fold as high as tail depth (Ref. 81259).Colouration: Back greenish-grey-brown; belly white, pectoral margins slightly darkened; tail brownish behind the sting, ventral tail fold blackish (Ref. 81259).
Life Cycle
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Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449).
Trophic Strategy
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A coastal species, occasionally entering lagoons, shallow bays and estuaries (Ref. 81259).
Biology
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A coastal species, occasionally entering lagoons, shallow bays and estuaries (Ref. 81259). Ovoviviparous (Ref. 50449).
Importance
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fisheries: