Mustelus dorsalis

Gill, 1864

Sharptooth smooth-hound
Classification: Elasmobranchii Carcharhiniformes Triakidae

Reference of the original description
Gill, T. (1864)
Second contribution to the Selachology of California. Proceedings of the Academy of Natural Sciences of Philadelphia, 16: 147–151

Image of the original description
No image in first description.

Synonyms / new combinations and misspellings
Galeorhinus dorsalis, Galeus dorsalis, Mustelus cf. dorsalis

Mustelus dorsalis
Syntype: USNM: 8068 (lost);

Description :

Citation: Mustelus dorsalis Gill, 1864: In: Database of modern sharks, rays and chimaeras,, World Wide Web electronic publication, Version 07/2021

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Mustelus dorsalis GILL, 1864, © FAO,
Common names
spa Cazón blanco, spa Cazón de leche, spa Cazón tripa, spa Musola blanca, spa Piruche, spa Tollo, spa Tollo blanco, spa Vieja, fra \(T\) Emissole blanche, eng Sharp-tooth smooth hound, eng Sharpnose smooth hound, eng Sharptooth smoot-hound, eng Sharptooth smooth-hound, eng Sharptooth smoothhound

Short Description
Diagnosis after Compagno, 1984 [517]: Body fairly slender. Head moderately long, prepectoral length 19 to 23% of total length; snout long and acutely angular in lateral view, preoral snout 6 to 8.8% of total length, preorbital snout 7.1 to 9.7% of total length; internarial space moderate, 2.1 to 3% of total length; eyes small, eye length 2.6 to 3.5 times in preorbital snout (over 3 times in adults) and 1.8 to 2.9% of total length; interorbital space very broad, 5.1 to 6.2% of total length; mouth long, greater than eye length, 3 to 4% of total length; upper labial furrows slightly longer than lowers or about as long, uppers 1.3 to 2.2% of total length; teeth cuspidate and asymmetric, with cusp prominent and cusplets occasionally present at all sizes; buccopharyngeal denticles present on anterior thirds of mouth floor and palate, and on gill arches. Interdorsal space 16 to 21% of total length; trailing edges of dorsal fins denticulate, without bare ceratotrichia; first dorsal broadly triangular, with posteroventrally sloping posterior margin, its midbase closer to pelvic bases than to pectorals; pectoral fins moderately large, length of anterior margins 12 to 16% of total length, width of posterior margins 8 to 14% of total length; pelvic fins moderately large, anterior margin length 6.7 to 9.1% of total length; anal height 2.7 to 3.4% of total length; anal-caudal space greater than second dorsal space and 4.8 to 6.8% of total length; ventral caudal lobe not falcate and weakly developed in adults. Crowns of lateral trunk denticles lanceolate, with longitudinal ridges extending their entire length. Skeleton not hypercalcified in adults; palatoquadrates not subdivided; monospondylous precaudal centra 38 to 44, diplospondylous precaudal centra 49 to 58, precaudal centra 92 to 99. Colour uniform grey or grey-brown above, light below, no white or dark spots or dark bars. Development viviparous. Size small, adults 43 to 64 cm.

Eastern Pacific: southern Mexico to Peru. Source:

Human uses
fisheries: minor commercial; price category: medium; price reliability: questionable: based on ex-vessel price for species in this genus

Viviparous, with a yolk-sac placenta [517]. An inshore bottom-dwelling shark found on the continental shelves. Feeds primarily on shrimps and probably other crustaceans.

Size / Weight / Age
64.0 cm TL (male/unsexed; (Ref. 9253))

demersal; marine

shark-references Species-ID=3789;

Parasites (arranged by Jürgen Pollerspöck)
  • Loimos scoliodoni (Manter, 1938) Manter, 1944 [22565]