Common names
Cazón blanco, Cazón de leche, Cazón tripa, Musola blanca, Piruche, Tollo, Tollo blanco, Vieja, Emissole blanche, Sharp-tooth smooth hound, Sharpnose smooth hound, Sharptooth smoot-hound, Sharptooth smooth-hound, 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.

Distribution
Eastern Pacific: southern Mexico to Peru. Source: www.gbif.org

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

Biology
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))

Habitat
demersal; marine

Remarks
shark-references Species-ID=3789;

Parasites (arranged by Jürgen Pollerspöck)
Monogenea

• Loimos scoliodoni (Manter, 1938) Manter, 1944 [22565]