Key to the 12 common sharks found around the South African Coast
Characters: 41 in data, 23 included, 11 in key.
Items: 12 in data, 12 included, 12 in key.
Parameters: Rbase = 1.40 Abase = 2.00 Reuse = 1.01 Varywt = .80
Characters included: 3 8–12 17–26 29–31 36–38 41
Character reliabilities: 1–41,5.0
1(0). | - Tooth shape Large triangular, serrated on both sides ... 2
- Tooth shape Triangular, slanted and smooth... 3
- Tooth shape Backward pointing, curved saw-edged... Galeocerdo cuvieri
- Tooth shape Sharp, cusped and oblique... Triaenodon obesus
- Tooth shape Small, pointed and tricuspid... 4
- Tooth shape Numerous rows of fang-like teeth... Carcharias taurus
- Tooth shape Narrow pointed cusps... 5
- Tooth shape Plate-like... Callorhinchus capensis
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2(1). | - Colour Grey; Southern African distribution Port Elizabeth to Zambezi River; Freshwater tolerance Freshwater tolerate; Reproduction Live bearer (approximately eight to ten) ... Carcharhinus leucas
- Colour Grey-blue; Southern African distribution Entire Southern African Coast; Freshwater tolerance Freshwater intolerant; Reproduction Live bearer (one to five)... Carcharodon carcharias
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3(1). | - Colour Dusky grey; Reproduction Live bearer (approximately eight to ten); Activity Both nocturnal and diurnal; Attack humans Rare incidents ... Carcharhinus obscurus
- Colour Grey; Reproduction Live bearer (approximately 30); Activity Diurnal; Attack humans No, but can be traumatogenic... Sphyrna lewini
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4(1). | - Attack humans No, but can be traumatogenic; Snout Pointed; Population Status Fairly common; Capitivy Captive - poor breeding ... Poroderma africanum
- Attack humans Harmless; Snout Rounded; Population Status Uncommon; Capitivy Captive breeding... Poroderma pantherinum
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5(1). | - Biogeography Temperate waters ... Haploblepharus edwardsii
- Biogeography Cold waters... Haploblepharus pictus
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