Triaenodon obesus, Whitetip reef shark : fisheries, gamefish

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Triaenodon obesus (Rüppell, 1837)

Whitetip reef shark
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Classification / Names প্রচলিত নাম সমূহ | প্রতিনাম সমূহ | Catalog of Fishes(গণ , প্রজাতি ) | ITIS | CoL | WoRMS | Cloffa

ইলাসমোব্রাঙ্কি (হাঙ্গর এবং রে) (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.

Environment: milieu / climate zone / depth range / distribution range বাস্তুসংস্থান

; সামুদ্রিক রীফ সংশ্লিষ্ট; গভীরতার পরিসীমা 1 - 330 m (Ref. 244), usually 8 - 40 m (Ref. 244). Tropical; 29°N - 30°S, 33°E - 77°W (Ref. 55196)

বিতরণ দেশ সমূহ | এফ এ ও এলাকাসমূহ | বাস্তুতন্ত্র | দৃষ্টিগোচর | Point map | প্রচলন | Faunafri

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.

Length at first maturity / আকৃতি / ওজন / Age

Maturity: Lm 107.0, range 105 - 109 cm
Max length : 213 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 244); common length : 160 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 244); সবের্াচ্চ প্রকাশিত ওজন : 18.3 kg (Ref. 4699); সর্বোচ্চ উলি্ল্লখিত বয়স : 25 বৎসর (Ref. 6807)

Short description বহিঃ অঙ্গ সংস্থান | মরফোমেট্রিক্স

পৃষ্ঠীয় কাঁটা (মোট ): 0; পৃষ্ঠীয় নরম পাখনা দন্ড (মোট ): 0; পায়ূ কাঁটা 0; পায়ূর নরম পাখনা্তুন্ড: 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).

জীববিজ্ঞান     শব্দকোষ (উদাহরণ স্বরূপ epibenthic)

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).

Life cycle and mating behavior পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট

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.

Main reference Upload your references | সূত্র সংখ্যা | সমম্বয়কারী : Compagno, Leonard J.V. | সহযোগী

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)


Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Traumatogenic (Ref. 4690)

Human uses

মৎস্য: গৌণ বাণিজ্যিক ; শিকারযোগ্য মাছ: হঁ্যা

আরো তথ্য

বহিঃ অঙ্গ সংস্থান
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এ্যাকুয়াকালচার নকশা
এ্যালিল সঙ্ঘটন
উতরাধিকার সুত্রে পাওয়া যোগ্যতা
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Estimates based on models

Preferred temperature (Ref. 115969): 24.3 - 28.8, mean 27.6 °C (based on 898 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00204 - 0.00588), b=3.12 (2.98 - 3.26), in cm total length, based on LWR estimates for species & Subfamily-BS (Ref. 93245).
ট্রফিক পর্যায়ে (Ref. 69278):  4.2   ±0.6 se; based on diet studies.
স্থিতিস্থাপক (Ref. 120179):  অত্যন্ত কম , সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৪ বৎসর (tm=5-9; tmax=25; Fec=1).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (83 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .
Price category (Ref. 80766):   Medium.
Nutrients (Ref. 124155):  Calcium = 8.31 [1.18, 29.66] mg/100g ; Iron = 0.35 [0.10, 0.95] mg/100g ; Protein = 21.2 [18.8, 23.6] % ; Omega3 = 0.11 [0.05, 0.25] g/100g ; Selenium = 34 [8, 89] μg/100g ; VitaminA = 81.7 [29.2, 227.9] μg/100g ; Zinc = 0.526 [0.238, 1.055] mg/100g (wet weight);