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Elasmobranchii (hajar och rockor) (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.
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).
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm230.0, range 220 - 240 cm Max length : 380 cm TL hane/ej könsbestämd; (Ref. 5213)
Taggstrålar i ryggfenan (totalt) : 0; Taggstrålar i analfenan: 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 på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Önskad temperatur (Ref. 123201): 24.7 - 29.1, mean 28.1 °C (based on 2034 cells).
Index för fylogenetisk mångfald (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).
Trofisk nivå (Ref. 69278): 4.1 ±0.6 se; based on diet studies.
Resiliens (Ref. 120179): Mycket låg, lägsta populationsfördubblingstid mer än 14 år (Fec=1).
Sårbarhet i fisket (Ref. 59153): Very high vulnerability (90 of 100). 🛈
