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Ikan bertulang rawan (sharks and rays) > Carcharhiniformes (Ground sharks) > Carcharhinidae (Requiem sharks)
Etymology: Triaenodon:triaeno, from triaina (Gr.), trident (having three points); odon (Gr.), tooth, referring to each having a cusp and two cusplets (See ETYFish); obesus:Latin for fat or stout, referring to its blunt head, said to give the shark a plump appearance (See ETYFish). More on author: Rüppell.
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi Ekologi
laut berasosiasi dengan karang; kisaran kedalaman 0 - 330 m (Ref. 244), usually 8 - 40 m (Ref. 244). Tropical; 29°N - 30°S, 33°E - 77°W (Ref. 55196)
Indo-Pacific: Red Sea and East Africa to Indonesia and the Arafura Sea (Ref. 9819), north to Ryukyu and Ogasawara islands, south to New South Wales (Australia), New Caledonia, and the Austral and Pitcairn islands; throughout Micronesia. Eastern Pacific: Cocos and Galapagos islands, Panama to Costa Rica.
Panjang pada saat jatuh tempo pertama / Ukuran / Berat / umur
Kematangan: Lm107.0, range 105 - 109 cm Max length : 213 cm TL jantan/; (Ref. 244); common length : 160 cm TL jantan/; (Ref. 244); Berat maksimum terpublikasi: 18.3 kg (Ref. 4699); Umur maksimum dilaporkan: 25 Tahun (Ref. 6807)
Duri punggung (Keseluruhan (total)) : 0; Duri dubur: 0. A small, slender shark with an extremely short, broad snout, oval eyes, and conspicuous white tips on the 1st dorsal (sometimes 2nd) and upper caudal fins; 2nd dorsal almost as large as 1st; no interdorsal ridge (Ref. 5578). Spiracles usually present, teeth 47-50/ 44-46, in at least 2 functional rows. Grey above, lighter below and sometimes with dark spots on sides (Ref. 5578). First dorsal-fin lobe and dorsal caudal-fin lobe with conspicuous white tips, second dorsal-fin lobe and ventral caudal-fin lobe often white-tipped (Ref. 9997). Body shape (shape guide): fusiform / normal.
Sluggish inhabitant of lagoons and seaward reefs where it is often found resting in caves or under coral ledges during the day (Ref. 6871, 58302), or usually on a sand patch, or in a channel (Ref. 37816). More active at night or during slack tide in areas of strong currents (Ref. 37816). Feeds on benthic animals such as fishes, octopi, spiny lobsters and crabs (Ref. 244). Viviparous (Ref. 50449). Travels distances from about 0.3 to 3 km in periods up to about 1 year (Ref. 244). Rarely reported to attack humans, but is potentially dangerous especially when fish had been speared (Ref. 244). Probably fished wherever it occurs (Ref. 244). Caught by inshore longline and gillnet fisheries, and probably adversely affected by dynamite fishing (Ref.58048). Meat and liver utilized fresh for human consumption (Ref. 244). The liver of this shark has been reported as toxic (Ref. 583). One to five 60 cm young per litter (Ref. 1602). Minimum depth reported taken from Ref. 128797.
Viviparous, placental (Ref. 50449), with 1 to 5 young per litter (Ref. 244); usually 2 or 3 pups after a gestation period of > 5 months (Ref.58048). Size at birth 52-60 cm TL (Ref. 9997). Distinct pairing with embrace (Ref. 205).
During courtship and prior to copulation, the male bites the female on her right pectoral fin and uses his medially flexed right clasper in copulation (Ref. 49562, 51119). During copulation which lasts from 15 seconds to 4 minutes (Ref. 49562, 51119), both heads of the male and female are slammed in the substrate and their bodies undulate to keep their tails elevated (Ref. 51155). This mating behavior was observed in individuals bred in captivity.
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 IUCN Red List (Ref. 130435: Version 2025-2 (Global))
Suhu yang disukai (Acuan 123201): 24.3 - 28.8, mean 27.6 °C (based on 898 cells).
Indeks keanekaragaman filogenetik (Acuan 82804): PD50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00213 - 0.00591), b=3.12 (2.98 - 3.26), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Tingkat Trofik (Acuan 69278): 4.2 ±0.6 se; based on diet studies.
Daya lenting (Acuan 120179): sangat rendah, Waktu penggandaan populasi minimum lebih dari 14 tahun (tm=5-9; tmax=25; Fec=1).
Kerentanan Penangkapan Ikan (Ref. 59153): Very high vulnerability (90 of 100). 🛈
