Mustelus mento Cope, 1877
  Fish   Triakidae   Mustelus

Mustelus mento
© Copyright Ross Robertson, 2006 · 12
Mustelus mento

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Mustelus mento
© Copyright Photographer/SFTEP, 2002 · 0
Mustelus mento

Mustelus mento Copyright Michel Lamboeuf · 0
Mustelus mento
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Main identification features
  • fins blunt
  • juveniles: dark bars
  • flank: white spots
Elongate, hunched body; short head pointed snout; mouth angular, short; teeth irregularly rounded, without points; width between eyes = 4.5-5.6% of total length; eyes horizontal ovals, with ventral nictitating membranes; 5 gill slits, last 2 over pectoral fin base; 2 large dorsal fins, second slightly smaller than first; first dorsal a blunt, broad triangle, nearer pelvic than pectoral; rear edges of dorsals denticled; distance between dorsal fins = 17-22% of total length; anal fin smaller than and with origin under middle of second dorsal; mouth angular; tail strongly asymmetrical, lower lobe not expanded or with concave rear edge; fins with blunt tips; skin denticles on flank pointed ovals with a single point, with or without canal on base.

Grey to grey-brown above, paler below; sides with many white spots; juveniles with dark bars.

Size: 130 cm.

Habitat: upper continental shelf, demersal.

Depth: 15-50 m.

SW Atlantic and SE Pacific (Colombia to Chile, Galapagos Islands).

Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo); South Temperate (Peruvian Province ).
Depth Range Max: 50 m.
Depth Range Min: 15 m.
Diet: mobile benthic crustacea (shrimps/crabs); bony fishes; mobile benthic worms; mobile benthic gastropods/bivalves.
Eastern Pacific Range: Northern limit=6; Southern limit=-9; Western limit=-93; Eastern limit=-78; Latitudinal range=15; Longitudinal range=15.
Egg Type: Live birth; No pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: New world (East Pacific + West Atlantic); East Pacific + Atlantic (East +/or West); TEP non-endemic; All species.
Habitat: Mud; Sand & gravel; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Soft bottom only.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 130 cm.
Regional Endemism: Island (s); Continent; Continent + Island (s); Tropical Eastern Pacific (TEP) non-endemic; Eastern Pacific non-endemic; Peruvian province, primarily; Temperate Eastern Pacific, primarily; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Mid Water; Near Bottom; Bottom + water column;

Scientific source:

Links to other sites

  • BÚarez, P., 1996., Lista de los Peces Marinos del Ecuador Continental., Revista de Biologia Tropical, 44:731-741.
  • Compagno, L.J.V., 1999., Checklist of living elasmobranchs. In Hamlett W.C. (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes., The John Hopkins University Press:471-498.
  • Compagno, L.J.V., 1984., Sharks of the World. An annotated and illustrated catalogue of shark species known to date. Part 2. Carcharhiniformes. FAO Species Catalogue., FAO Fish. Synop. No 125, 4(2):251-655.
  • Cope, E. D., 1877., Synopsis of the cold blooded vertebrata, procured by Prof. James Orton during his exploration of Peru in 1876-77., Proc. Amer. Phil. Soc., 17:33-49.
  • Fischer , W. , Krup , F. , Schneider , W. , Sommer , C. , Carpenter , K. E. and Niem, V. H., 1995., Guia FAO para la Identificacion de Especies de para los fines de la Pesca. Pacifico Centro-Oriental. Volumen II. Vertebrados - Parte 1., FAO2:647-1200.
  • Hildebrand, S.F., 1946., A descriptive catalog of the shore fishes of Peru., Bull. U.S. Nat. Mus., 189:1-530.
  • Jimenez-Prado, P., BÚarez, P., 2004., Peces marinos del Ecuador continental / Marine fishes of continental Ecuador., SIMBIOE/NAZCA/IFEA tomo 1 y 2.


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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Mustelus mento Cope , 1877

Speckled smooth-hound Add your observation in Fish Watcher
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Picture by B├ęarez, P.

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

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Triakidae (Houndsharks) > Triakinae
Etymology: Mustelus: Latin, mustela, -ae = weasel (Ref. 45335 ) .  More on author: Cope .

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

Marine; demersal; depth range 16 - 50 m (Ref. 244 ).   Subtropical; 0°S - 57°S, 95°W - 67°W (Ref. 244 )

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

Eastern Pacific: Peru to southern Chile, including the Galapagos and Juan Fernández Islands.

Length at first maturity / Size / Weight / Age

Maturity: L m   ? , range 86 - 90 cm
Max length : 130 cm TL male/unsexed; (Ref. 244 )

Short description Morphology | Morphometrics

Adults marked by small white spots but sometimes plain colored, while young specimens marked with dark colored bars (Ref. 6032 ).

Biology     Glossary (e.g. epibenthic)

An inshore and offshore shark found on the continental and insular shelves (Ref. 244 ). Ovoviviparous, with 7 young in a litter. Size at birth about 30 cm. Utilized for human consumption.

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

Ovoviviparous, embryos feed solely on yolk (Ref. 50449 ). Distinct pairing with embrace (Ref. 205 ).

Main reference Upload your references | References | Coordinator : Compagno, Leonard J.V. | Collaborators

Compagno, L.J.V. , 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244 )

IUCN Red List Status (Ref. 119314 )

  Near Threatened (NT)  ; Date assessed: 01 March 2007

CITES (Ref. 115941 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans


Human uses

Fisheries: highly commercial FAO(Publication : search ) | FishSource |

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Estimates of some properties based on models

Preferred temperature (Ref. 115969 ): 9.7 - 20.5, mean 11.4 (based on 32 cells). Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00240 (0.00119 - 0.00483), b=3.15 (2.98 - 3.32), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  3.7   ±0.3 se; Based on size and trophs of closest relatives Resilience (Ref. 69278 ):  Very Low, minimum population doubling time more than 14 years (Fec=7). Vulnerability (Ref. 59153 ):  High to very high vulnerability (66 of 100) . Price category (Ref. 80766 ):   Medium .

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