वर्गीकरण / नाम
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इलाज़मौबरांकी (शारक और रेज़) (sharks and rays) >
Carcharhiniformes (Ground sharks) >
Triakidae (Houndsharks) > Galeorhininae
Etymology: Hemitriakis: hemi-, from hemisys (Gr.), half, being a genus that Herre believed was “most closely related” to Triakis (See ETYFish); complicofasciata: complico (L.), complicated; fasciata (L.), striped, referring to complex body color pattern of young specimens (See ETYFish).
पर्यावरण: पर्यावरण / जलवायु क्षेत्र / गहराई सीमा / वितरण सीमा
पारिस्थितिकी
समुद्री बेनथोपिलाजिक. Temperate
Northwest Pacific: Ryukyu Is. (Japan) and Taiwan.
आकार / वज़न / आयु
परिपक्व अवधि: Lm ? range ? - 80.5 cm
Max length : 81.0 cm TL पुल्लिंग / अलिंग; (Ref. 55581); 88.0 cm TL (female)
संक्षिप्त वर्णन
पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स
This species is distinguished by the following characters: monospondylous vertebrae 46-52; precaudal total vertebrae 124-131; posterior nasal flap developed; first dorsal fin origin anterior to free rear tips of pectoral fin; snout length short with snout tip to oral length < 1.8 times internarial width; embryos and juveniles with dark complicated lines and rings; no accessory cartilage at symphysial part of upper jaw (Ref. 55581).
Body shape (shape guide): elongated.
Claspers of most males are almost fully elongate and calcified at about 76 cm TL; while females are mature and pregnant at about 76 cm TL. Embryos less than 22 cm TL with only external yolk, most that are more than 22 cm TL with substantial internal yolk. Litter size from 5-8 with 2-4 embryos per uterus. Five pregnant specimens contained a total of 29 embryos (9 females and 20 males) and each embryo were covered separately by embryonic membrane (Ref. 55581).
जीवन चक्र और संभोग व्यवहार
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | उपजाऊपन | लार्वा
Takahashi, M. and K. Nakaya, 2004. Hemitriakis complicofasciata, a new whitefin topshark (Carcharhiniformes; Triakidae) from Japan. Ichth. Research 51(3):248-255. (Ref. 55581)
आईयूसीएन रेड लिस्ट स्थिति (Ref. 130435: Version 2025-2 (Global))
मनुष्यों के लिए ख़तरा
Harmless
मानव उपयोग
साधन
विशेष रिपोर्ट
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इंटरनेट स्रोत
मॉडल पर आधारित अनुमान
जातिवृति विविधता सूचकांक (संदर्भ
82804): PD
50 = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00183 - 0.00997), b=3.04 (2.84 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ट्रॉफिक स्तर (संदर्भ
69278): 4.2 ±0.5 se; based on size and trophs of closest relatives
लौटाव (संदर्भ
120179): निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (Preliminary low fecundity).
मछली पकड़ने की भेद्यता (Ref.
59153): High vulnerability (55 of 100).
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