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Neotrygon kuhlii  (Müller & Henle, 1841)

Blue-spotted stingray
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Image of Neotrygon kuhlii (Blue-spotted stingray)
Neotrygon kuhlii
Picture by Randall, J.E.


Australia country information

Common names: Bluespotted maskray, Blue-spotted maskray, Blue-spotted stingaree
Occurrence: questionable
Salinity: marine
Abundance: | Ref:
Importance: minor commercial | Ref: Johannes, R.E. and J.W. MacFarlane, 1991
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Outside distributional range (Ref. 116741). Ranges from Shark Bay (Ref. 115274), Western Australia north- and eastward to areas north of Port Stephens, New South Wales (Ref. 6871); also from the Torres Strait Islands (Ref. 13465) and the Territory of Ashmore and Cartier Islands (Ref. 75154). Minor commercial (Ref. 13465). Museum: CSIRO CA1249, CA2893, CA1241, CA1256, CA1140, CA1238, CA1240. Also Ref. 2334, 37816, 38544.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/as.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Last, P.R., White, W.T. and B. Séret, 2016
National Database:

Classification / Names

Elasmobranchii (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays) > Neotrygoninae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Issue
This species consists of a complex or several species and the type series consists of multiple species. Some information (data from references) collated for this species in FishBase may not be applicable. Modifications - in progress.

Main reference

Size / Weight / Age

Max length : 70.0 cm TL male/unsexed; (Ref. 5578)

Length at first maturity
Lm 27.6, range 12 - 46.5 cm

Environment

Marine; reef-associated; depth range 0 - 170 m (Ref. 89055), usually ? - 90 m (Ref. 9840)

Climate / Range

Tropical; 33°N - 33°S, 28°E - 154°W

Distribution

Southwest Pacific: Solomon Islands, but probably more widespread in Oceania (limits of its distribution need to be defined).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

This medium-sized Neotrygon of the kuhlii-complex (reaching at least 30 cm DW) is distinguished by the following set of characters: disc is broader than long, its width ca. 1.2 times length; pectoral apices are narrowly rounded; snout rather fleshy, broadly angular, its angle ca. 107°, its length 1.7-2.1 times interorbital width; maximum width is relatively well back on disc, the length from snout tip to pectoral-fin insertion 1.8-1.9 times and disc width 2.5-2.6 times horizontal distance from snout tip to maximum disc width; preoral length is 2.4-2.8 times mouth width; internasal distance is 1.5-1.8 in prenasal length; interspiracular distance is 13-15% DW; nostril length is 2.8-4.1% DW; nasal curtain width is 8-8.3% DW; mouth small, its width 6.4-6.8% DW; horizontal distance from cloaca to caudal sting base ca. 55% of disc length; nuchal region with thornlets, none from tail in all sizes; no dermal denticles; 113 pectoral-fin radials (based on new specimen); 133 total vertebral centra (including synarcual), 39 trunk centra (including synarcual); presence of blue spots that are very small and sparse, largest spot on disc 0.3-0.5 times eye width; median belt with 0-6 (mean 3.0) blue spots, largest ~2.1% DW; pronounced mask-like marking, not covered with dark peppery spots; ventral surface of disc and pelvic fins with broad dark greyish submarginal bands; when fresh, ventral tail fold and adjacent tail bluish grey (Ref. 116741).

Biology     Glossary (e.g. epibenthic)

A solitary species found on sandy bottoms near rocky or coral reefs (Ref. 12951). Usually found in deeper water but moves onto the reef flat and into shallow lagoons at high tide (Ref. 12951). Occasionally covers itself with sand, leaving only its eyes and tail visible (Ref. 37816). Feeds on crabs and shrimps (Ref. 5578). Ovoviviparous (Ref. 50449). The venomous spine can inflict a painful wound (Ref.4690). Caught in very large quantities in the bottom trawl, trammel and fish trap fisheries. Utilized for its meat but of limited value due to its small size (Ref. 58048).

IUCN Red List Status (Ref. 115185)

Threat to humans

  Venomous (Ref. 4690)



Human uses

Fisheries: commercial

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD50 = 0.5039 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.3   ±0.3 se; Based on diet studies.

Resilience (Ref. 69278)
Very Low, minimum population doubling time more than 14 years (Fec=1-3)

Vulnerability (Ref. 59153)
Moderate to high vulnerability (52 of 100)
Price category (Ref. 80766)
Low