Neotrygon orientalis Last, White & Serét, 2016
Oriental bluespotted maskray
No Picture Available

Family:  Dasyatidae (Stingrays), subfamily: Neotrygoninae
Max. size:  38 cm WD (male/unsexed)
Environment:  reef-associated; marine
Distribution:  Western Central Pacific: Indonesia, Malaysia (Borneo), the Philippines and Taiwan.
Diagnosis:  This small Neotrygon species of the kuhlii-complex (reaching at least 38 cm DW; males maturing at 22 cm DW) is distinguished by the following set of characters: disc is much broader than long, width 1.2-1.3 times length; pectoral apices are abruptly angular; snout fleshy, broadly rounded to weakly angular, with an angle 124-129°, length 1.9-2.5 times interorbital width; the maximum width relatively well forward on disc, length from snout tip to pectoral-fin insertion 1.8-2 times and disc width 2.7-2.9 times horizontal distance from snout tip to maximum disc width; preoral length 1.8-.2 times the mouth width; internasal distance is 1.3-1.6 in prenasal length; interspiracular distance 13-16% DW; nostril length 3.1-3.8% DW; nasal curtain width 8.9-10% DW; mouth small, its width 7-7.5% DW; the horizontal distance from cloaca to caudal sting base is 48-56% of disc length; presence of thornlets in nuchal region and weakly developed in the lumbar regions in adults, none from tail in all sizes; minute, widely-spaced dermal denticles present on mid-disc of large adults; pectoral-fin radials 105-110; total vertebral centra (including synarcual) 125-141, trunk centra (including synarcual) 36-42; with moderately large blue spots on disc, largest 0.5-0.9 in eye width, few on medial belt, 0-6 (mean 0.4), largest 2.8-3.3% DW; mask-like marking is rather pronounced, covered with dark peppery spots; the ventral surface of disc with diffuse greyish submarginal bands; ventral tail fold is dusky with darker edge (Ref. 116741).
Biology:  This species found demersal, inshore to mid-continental and on insular shelves. Accurate depth range is not available but probably found usually inshore at depths less than 100 meters. Reported pregnant females contained only a single pup with size at birth of ca.12.0 cm (Ref. 114953).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (124695)
Threat to humans:  harmless
Country info:  Type locality of Neotrygon orientale, South Kalimantan, Muara Kintap. Also known from West Java. Specimens taken from the Muara Angke landing site in Jakarta were mostly caught by trap fisheries that were operating off Sumatra, thus its presence in Java is not confirmed (Ref. 116741).

Entered by: Capuli, Estelita Emily - 20.12.17
Modified by: Capuli, Estelita Emily - 07.10.19

Source and more info: www.fishbase.org. For personal, classroom, and other internal use only. Not for publication.


Page created by Jen, 05.08.02, php script by kbanasihan 06/09/2010 ,  last modified by sortiz, 10/02/17