Environment: milieu / climate zone / गहराई सीमा / distribution range
पारिस्थितिकी
समुद्री pelagic-oceanic; गहराई सीमा 0 - 50 m (Ref. 106604). Tropical
Indo-West Pacific: eastern coast of Africa to Indonesia.
Length at first maturity / आकार / वज़न / Age
परिपक्व अवधि: Lm ?, range 115 - ? cm
Max length : 119 cm WD पुल्लिंग / अलिंग; (Ref. 11441); 120.0 cm WD (female); अधिकतम प्रकाशित वज़न: 30.0 kg (Ref. 11228)
Short description
पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स
A small devilray with a short head bearing short head fins; dorsal fin white-tipped, and pectoral fins with slightly curved tips; upper surface with no denticles and tail shorter than disc, with no spine (Ref. 5578). Dark brown above, white below (Ref. 5578).
Body shape (shape guide): other.
Found in coastal and oceanic waters (Ref. 5578). Feeds on plankton (Ref. 30573). Ovoviviparous (Ref. 50449). Generally found in schools, leaping out of the water (Ref. 11228). Caught rarely in the tuna gillnet fisheries. Utilized for its gill filter plates (high value), meat, cartilage and skin (Ref.58048).
Life cycle and mating behavior
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Probably giving birth to only one pup; born at ~31 cm WD (Ref.58048).
Randall, J.E., 1995. Coastal fishes of Oman. University of Hawaii Press, Honolulu, Hawaii. 439 p. (Ref. 11441)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
मात्स्यिकी: लघु वाणिज्य
साधन
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इंटरनेट स्रोत
Estimates based on models
Preferred temperature (संदर्भ
123201): 23.9 - 29.1, mean 28 °C (based on 1852 cells).
Phylogenetic diversity index (संदर्भ
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic level (संदर्भ
69278): 3.4 ±0.45 se; based on food items.
लौटाव (संदर्भ
120179): निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (84 of 100).
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