Author: Kato, 1968

Field Marks:
A houndshark with a short broadly rounded snout, lobate anterior nasal flaps that do not reach the mouth and are far separated from each other, long upper labial furrows that reach the lower symphysis of the mouth, teeth not bladelike, with straight erect cusps and cusplets littledeveloped or absent, narrow fins with the pectorals narrowly falcate and the first dorsal fin with a vertical posterior margin, and no spots.

Diagnostic Features:
Teeth with strong erect cusps on most teeth of the dental band except for some more distal teeth, cusplets low or absent on almost all teeth, semimolariform but not bladelike. First dorsal fin with abruptly vertical posterior margin; pectoral fins narrowly falcate in adults. Total vertebral counts 175 or 176. Body without small black spots.

Geographical Distribution:
Eastern South Pacific: Ecuador.

Habitat and Biology:
A rare shark of tropical continental waters off Ecuador, known from two specimens. Biology virtually unknown.

Size:
Maximum 102 cm (adult female), adult male 90 cm.

Interest to Fisheries:
None at present.

Type material:
Holotype: U.S. National Museum of Natural History, USNM-201409, 1018 mm adult female. Type Locality: Isla de la Plata, Ecuador.

Kingdom Animalia
Phylum Chordata
Subphylum Vertebrata
Superclass Gnathostomata
Class Chondrichthyes
Subclass Elasmobranchii
Superorder Galeomorphii
Order Carcharhiniformes
Family Triakidae
Genus Triakis
Species Triakis acutipinna

Status in World Register of Marine Species

Accepted name: Triakis acutipinna Kato, 1968

Scientific synonyms and common names

Triakis acutipinna Kato, 1968

Triakis acutipinna Kato, 1968, Copeia, 1968 (2):320, figs. 1-2.

Synonymy: None.

FAO Names:
Sharpfin houndshark [English]
Virli équatorien [French]
Tollo del Ecuador [Spanish]
TRIAK Triak 1 [FAO Code]

Kato, S., 1968. Triakis acutipinna (Galeoidea, Triakidae), a new species of shark from Ecuador. Copeia, 1968(2):319-25

Compagno, L.J.V., 1970. Systematics of the genus Hemitriakis (Selachii: Carcharhinidae), and related genera. Proc.Calif.Acad.Sci., 33(4):63-98

Compagno, L.J.V., 1979. Carcharhinoid sharks: morphology, systematics and phylogeny. Unpublished Ph. D. Thesis, Stanford University, 932 p. Available from University Microfilms International, Ann Arbor, Michigan

No distribution map was available at OBIS the last time we checked. Retry now.

You can continue searching for Triakis acutipinna on one of these Web sites:

Fauna Europaea (animals) | IOPI (plants) | NCBI (genetic)

Google | Yahoo | MSN | Wikipedia