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Elasmobranchii (sharks and rays) > Myliobatiformes (Stingrays) > Urolophidae (Round rays)
Etymology: Urolophus: Greek, oura = tail + Greek, lophos = crest (Ref. 45335).
More on authors: Müller & Henle.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; demersal. Temperate

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Northwest Pacific: Japan and the Ryukyu Islands to the East China Sea.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 40.0 cm TL male/unsexed; (Ref. 12951)

Found on sand and rock bottoms (Ref. 12951, 11230). Ovoviviparous, with up to 4 in a litter (Ref. 12951).

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

Male grasps pectoral fin of female then mounts on rear margin of female's dorsum during copulation. Copulation reported to last up to 14 minutes.

Main reference Upload your references | References | Coordinator | Collaborators

Mould, B., 1994. A world list of rays. The scientific nomenclature and distribution of the recent Batoidea (Batoidea, Elasmobranchii, Chondrichthyes). University of Nottingham, [UK]. 82 p. (Ref. 8630)

IUCN Red List Status (Ref. 130435: Version 2024-2)

Vulnerable (VU) (A2d); Date assessed: 29 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Predators

Ecology
Ecology

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
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Life cycle
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Maturity/Gills rel.
Fecundity
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Eggs
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00813 (0.00372 - 0.01775), b=3.08 (2.88 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.5 ±0.37 se; based on food items.

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (30 of 100).

Urolophus aurantiacus Müller & Henle, 1841