Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Triakidae
(Houndsharks) > Triakinae
Etymology: Triakis: Greek, triakis = three times (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal. Tropical; 0°S - 30°S
Eastern Pacific: Galapagos Islands and from Peru to northern Chile. Mexican records of this species are erroneous.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 180 cm TL male/unsexed; (Ref. 244)
Found on the continental shelf, mostly inshore. Possibly to 240 cm. Probably feeds on benthic invertebrates (Ref. 28023). Ovoviviparous (Ref. 50449), with about 14 young to a litter. Size of full-term fetuses 30 to 40 cm. Utilized for human consumption.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Ovoviviparous, embryos feed solely on yolk (Ref. 50449).
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. 115185)
CITES (Ref. 115941)
Threat to humans
Fisheries: minor commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00269 (0.00134 - 0.00539), b=3.15 (2.97 - 3.33), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.5 ±0.37 se; Based on food items.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (Fec=14).
Vulnerability (Ref. 59153
): High to very high vulnerability (74 of 100) .