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Elasmobranchii (haaien en roggen) (sharks and rays) > Carcharhiniformes (Ground sharks) > Carcharhinidae (Requiem sharks)
Etymology: Negaprion:negatus (L.), to deny; prion (Gr.), saw, referring to lack of saw-like serrations on teeth cusps (See ETYFish); acutidens:acutus (L.), sharp or pointed; dens, from dentis (L.), tooth, probably referring to pyramid-like teeth (“dünnen spitzen Pyramiden”) (See ETYFish). More on author: Rüppell.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie
marien; brak water rifbewoner; oceano-estuarine (Ref. 129182); diepte 0 - 92 m (Ref. 244). Tropical; 30°N - 32°S, 32°E - 140°W (Ref. 244)
Indo-Pacific: Red Sea and South Africa (including Mauritius, Seychelles, Madagascar) to Philippines, north to Viet Nam, south to Australia. Also from Palau, Marshall Islands, and Tahiti. Recorded from Taiwan (Ref. 4868).
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturiteit: Lm230.0, range 220 - 240 cm Max length : 380 cm TL mannelijk / geslacht onbekend; (Ref. 5213)
Dorsale stekels (totaal) : 0; Anale stekels: 0. A large, stocky, yellowish shark with a broad, blunt snout, narrow, smooth-cusped teeth in both jaws, and equal-sized dorsal fins (Ref. 5578). Yellowish brown above, paler below (Ref. 9997). With two nearly equally large dorsal fins (Ref. 37816). Body shape (shape guide): fusiform / normal.
Adults are found on continental and insular shelves and terraces (Ref. 244). And are common on coral reefs (Ref. 5578). Juveniles are confined to shallow inshore areas, with preference for sandy lagoons and turbid, mangrove swamps (Refs. 6871, 129182). Adults feed on smaller sharks, stingrays and on benthic bony fishes (Ref. 5578). Viviparous (Ref. 50449). Dangerous if provoked (Ref. 244). 1 to 11 of 45 cm young are born per litter (Ref. 1602). Meat is utilized fresh and dried salted for human consumption, fins for shark-fin soup base, and liver oil for vitamins (Ref. 244).
Viviparous, placental (Ref. 50449), 1-14 per litter (Ref. 6871). Gestation period 10-11 months (Ref. 5578; Ref.58048). Size at birth about 50 to 70 cm TL (Ref. 9997); 45-80 cm TL (Ref.58048). Distinct pairing with embrace (Ref. 205). Mating and pupping take place during late spring and early summer (Ref. 37816).
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)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gewenste temperatuur (Ref. 123201): 24.7 - 29.1, mean 28.1 °C (based on 2034 cells).
Fylogenetische diversiteitsindex (Ref. 82804): PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00233 - 0.01031), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278): 4.1 ±0.6 se; based on diet studies.
Weerstandsvermogen (Ref. 120179): Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Fec=1).
Kwetsbaarheid van de visserij (Ref. 59153): Very high vulnerability (90 of 100). 🛈
