Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays)
Etymology: Urogymnus: Greek, oura = tail + Greek, gymnos = naked (Ref. 45335).

Environment / Climate / Range Ecology

Marine; brackish; reef-associated; depth range 15 - 217 m (Ref. 86942). Tropical, preferred ?; 31°N - 31°S, 20°W - 177°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-Pacific: Red Sea and coast of East Africa to the Marshall Islands and Fiji, south to northern Australia (Ref. 2334). Eastern Atlantic: Senegal, Guinea, and Côte d'Ivoire (Ref. 4438).

Length at first maturity / Size / Weight / Age

Maturity: L_m ?, range 100 - ? cm
Max length : 147 cm WD male/unsexed; (Ref. 58048)

Short description Morphology | Morphometrics

Diagnosis: A heavily armored stingray lacking a venomous barb; young with large, flat denticles on upper surface, and large juveniles and adults with additional sharp conical thorns and small, pointed denticles (Ref. 5578).

Inhabits the continental shelf area (Ref. 2334), but capable of entering coastal lagoons (Ref. 81259). Found on sand and coral rubble areas near reefs (Ref. 9840), often in caves. Ovoviviparous (Ref. 50449). Due to its difficult handling, it is probably of limited commercial value (Ref. 9840). Its thorn can inflict a painful injury; caught commonly by demersal tangle net fisheries; utilized for its meat, skin (very high value) and cartilage (Ref.58048).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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). Distinct pairing with embrace (Ref. 205). Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | References | Coordinator : McEachran, John | Collaborators

Randall, J.E., G.R. Allen and R.C. Steene, 1990. Fishes of the Great Barrier Reef and Coral Sea. University of Hawaii Press, Honolulu, Hawaii. 506 p. (Ref. 2334)

IUCN Red List Status (Ref. 115185)

Vulnerable (VU) (A2bd)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Traumatogenic (Ref. 2334)

Human uses

Fisheries: commercial

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More information

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Common names
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Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01047 (0.00430 - 0.02548), b=3.04 (2.83 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic Level (Ref. 69278): 3.5 ±0.46 se; Based on food items.

Resilience (Ref. 69278): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).

Vulnerability (Ref. 59153): Very high vulnerability (90 of 100) .

Price category (Ref. 80766): Low.

Urogymnus asperrimus (Bloch & Schneider, 1801)