Common names
Cazón, Cazón picudo chino, Tiburón, Tollo, Requin aiguille brésilien, Brazilian sharpnose shark, Puppy shark, Shark, Sharpnose shark, Cação frango, Figuinho, Frango

Short Description
Field Marks: In its area the only requiem shark with long upper and lower labial furrows, small second dorsal fin with origin far behind anal origin, long anal ridges, and adpressed pectoral fin apex falling in front of first dorsal midbase. See key to species and diagnostic features for characters separating it from allopatric members of its genus.
Diagnostic Features: Prenarial snout 4.4 to 5.1% of total length; upper labial furrows long, 1.4 to 2.1% of total length; total count of enlarged hyomandibular pores on both sides of head just behind mouth angle usually over 17 (6 to 14 on each side); teeth not serrate or irregularly serrate in adults; adult males with narrower, higher, more flex-cusped anterolateral teeth than adult females or immature males; total tooth rows usually 25/24. First dorsal origin over or slightly posterior to pectoral free rear tips; second dorsal origin usually above anal insertion but occasionally over the rear fourth of its base; pectoral anterior margin usually shorter than first dorsal length from origin to free rear tip; adpressed pectoral apex reaching to below first third of first dorsal base or falling behind it. Posterior monospondylous precaudal centra slightly enlarged; precaudal centra more numerous than caudals, precaudals 79 to 90, total centra 153 to 168. Size moderately small, males maturing at about 50 cm total length. Body dark grey or grey-brown above, light below, pectorals with light margins, dorsals dusky. [517]

Distribution
Western Atlantic: Panama to southern Brazil and Uruguay [5839]. Source: www.gbif.org

Human uses
fisheries: commercial

Biology
Distinct pairing with embrace [17086]. Viviparous, placental [733]. Inhabits shallow coastal waters, on sandy and muddy bottoms, and not normally found in lagoons and estuaries. Feeds on small bony fishes, including sardines and anchovies, also shrimp and squid. Diet:

Size / Weight / Age
77 cm TL (female)

Habitat
demersal; marine; depth range 3 - 70 m [517]

Remarks
shark-references Species-ID=6112;

Parasites (arranged by Jürgen Pollerspöck)
Cestoda

• Poecilancistrium caryophyllum (Diesing, 1850) Dollfus, 1929 [16112] [25154]