Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Rhinobatidae (Guitarfishes)
Etymology: glaucostigma: Specific name referring to a colored mark..
More on authors: Jordan & Gilbert.

Issue
Date Eschmeyer, pers.comm.

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

Marine; demersal; depth range 1 - 112 m (Ref. 96339). Tropical; 28°N - 4°S, 112°W - 82°W (Ref. 114953)

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

Eastern Central Pacific: Gulf of California to Ecuador.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 89.0 cm TL male/unsexed; (Ref. 114953)

Benthic in shallow waters over soft bottom (Ref. 9262). Adults feed on prawns and crabs, juveniles mainly amphipod crustaceans (Ref. 114953). Ovoviviparous (Ref. 50449).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | 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).

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

Compagno, L.J.V., 1999. Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland. (Ref. 35766)

IUCN Red List Status (Ref. 130435)

Vulnerable (VU) (A2d); Date assessed: 08 February 2019

CITES

Appendix II: International trade monitored

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
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Food consumptions
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Predators

Ecology
Ecology

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Length-weight rel.
Length-length rel.
Length-frequencies
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Life cycle
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Fecundities
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Egg(s)
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Distribution
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Anatomy
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Brains
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Physiology
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Visual pigment(s)
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Diseases / Parasites
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Genetics
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Stamps, coins, misc.

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Summary page | Point data | Common names | Photos

Internet sources

Estimates based on models

Preferred temperature (Ref. 123201): 19.7 - 28.9, mean 26 °C (based on 84 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00263 (0.00156 - 0.00444), b=3.08 (2.93 - 3.23), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.6 ±0.5 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): High vulnerability (56 of 100).

Nutrients (Ref. 124155): Calcium = 42 [11, 188] mg/100g; Iron = 0.765 [0.198, 2.189] mg/100g; Protein = 18.6 [16.5, 20.5] %; Omega3 = 0.149 [0.065, 0.342] g/100g; Selenium = 54.8 [13.8, 152.3] μg/100g; VitaminA = 12.8 [4.9, 31.8] μg/100g; Zinc = 0.886 [0.436, 1.580] mg/100g (wet weight);

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