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Triakis megalopterus  (Smith, 1839)

Sharptooth houndshark
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Native range | All suitable habitat | Point map | Year 2100
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Triakis megalopterus   AquaMaps   Data sources: GBIF OBIS
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Image of Triakis megalopterus (Sharptooth houndshark)
Triakis megalopterus
Picture by Zsilavecz, G.


South Africa country information

Common names: Gespikkelde sloothaai, Spotted gully shark, Spotted gullyshark
Occurrence: native
Salinity: marine
Abundance: common (usually seen) | Ref: van der Elst, R.P. and F. Adkin (eds.), 1991
Importance: minor commercial | Ref: Compagno, L.J.V., 1984
Aquaculture: | Ref:
Regulations: no regulations | Ref: van der Elst, R., 1993
Uses: gamefish: yes;
Comments: Ranges from the west coast to Coffee Bay, Transkei; rarely off Natal. Stock sound; commonly caught by rock and surf tournament anglers (Ref. 4332). There is a fairly large commercial fishery in Gans Bay (Ref. 244). Also Ref. 5485, 12484.
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/sf.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., D.A. Ebert and M.J. Smale, 1989
National Database:

Classification / Names

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Triakidae (Houndsharks) > Triakinae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Main reference

Size / Weight / Age

Max length : 142 cm TL male/unsexed; (Ref. 244); 174.0 cm TL (female); max. published weight: 20.0 kg (Ref. 5485)

Length at first maturity
Lm ?, range 140 - 150 cm

Environment

Marine; demersal; depth range 1 - 50 m (Ref. 5578)

Climate / Range

Subtropical, preferred ?; 30°S - 36°S

Distribution

Southeast Atlantic: Namibia to Coffee Bay, South Africa.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. Blunt snout and a large mouth with small pointed teeth; caudal peduncle short and heavy (Ref. 5578). Grey with numerous black spots which may be sparse or absent in some specimens; new born pups with fewer black spots compared to adults (Ref. 5485); white below (Ref. 5578).

Biology     Glossary (e.g. epibenthic)

Occurs off sandy beaches, rocky shores and in shallow bays (Ref. 5578). Feeds on crabs, lobsters, bony fish and small sharks (Ref. 5578). Ovoviviparous (Ref. 50449). Forms schools in summer (Ref. 244). Hardy and keeps well in captivity (Ref. 244). Commonly caught by rock and surf sports anglers but not eaten much (Ref. 244). Meat is dried into shark 'biltong' or jerky which commands a relatively high price (Ref. 244). Attains 160 cm, TL (Ref. 36731).

IUCN Red List Status (Ref. 115185)

Threat to humans

  Harmless



Human uses

Fisheries: minor commercial; gamefish: yes; aquarium: public aquariums

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration
Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance
References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion
Collaborators
Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

Special reports

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Internet sources

BHL | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | ECOTOX | FAO(fisheries: production; publication : search) | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | Public aquariums | PubMed | Scirus | Sea Around Us | SeaLifeBase | Tree of Life | uBio | uBio RSS | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record | Fishtrace

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD50 = 0.5312 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
4.0   ±0.5 se; Based on diet studies.

Resilience (Ref. 69278)
Very Low, minimum population doubling time more than 14 years (Fec=6)

Vulnerability (Ref. 59153)
High to very high vulnerability (74 of 100)
Price category (Ref. 80766)
High