ইলাসমোব্রাঙ্কি (হাঙ্গর এবং রে) (sharks and rays) >
Rhinopristiformes (Shovelnose rays) >
Trygonorrhinidae (Banjo rays, Fiddler rays)
Etymology: Trygonorrhina: Greek, trygon = a sting ray + Greek, rhinos = nose (Ref. 45335).
More on authors: Müller & Henle.
Environment: milieu / climate zone / গভীরতার পরিসীমা / distribution range
বাস্তুসংস্থান
সামুদ্রিক তলদেশ বিহারী; গভীরতার পরিসীমা 0 - 100 m (Ref. 114953). Subtropical; 28°S - 38°S, 149°E - 155°E (Ref. 114953)
Southwest Pacific: endemic to eastern Australia.
আকৃতি / ওজন / Age
পরিপক্কতা : Lm ? range ? - ? cm
Max length : 120 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 114953); সবের্াচ্চ প্রকাশিত ওজন : 6.7 kg (Ref. 6870)
This large shovelnose ray is distinguished by the following characters: suboval disc, short and broadly rounded snout with nostrils partly covered with a large nasal curtain; sharp thorns present on mid-line of disc and shoulders; behind interorbital space is an ornate pattern of dark-edged bands with distinct triangular or diamond-shaped marking (Ref. 114953).
Body shape (shape guide): other; Cross section: flattened.
A benthic species and an active scavenger which will enter fish traps and often becoming ensnared by the disc (Ref. 6871). Found also on sandy bottoms and seagrass areas, often near rocky reefs (Ref. 12951). Mainly feeds on crabs and shrimps (Ref. 114953). Ovoviviparous with golden egg capsules, each with up to 3 embryos (Ref. 12951). Produces up to 2-3 pups. Length size seldom exceeds 110 cm TL; birth size at ca. 25 cm TL (Ref. 114953). The flesh is good to eat, although only a small quantity is sold in seafood outlets (Ref. 6871).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
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).
Last, P.R., W.T. White, M.R. de Carvalho, B. Séret, M.F.W. Stehmann and G.J.P. Naylor, 2016. Rays of the world. CSIRO Publishing, Comstock Publishing Associates. i-ix + 1-790. (Ref. 114953)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
মৎস্য: গৌণ বাণিজ্যিক ; শিকারযোগ্য মাছ: হঁ্যা ; মৎস্যাধার / এ্যাকুয়ারিয়াম : পাবলিক এ্যাকুয়ারিয়াম
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ইন্টারনেট সুত্র
Estimates based on models
Preferred temperature (সূত্র
123201): 17.3 - 22.5, mean 20.7 °C (based on 18 cells).
Phylogenetic diversity index (সূত্র
82804): PD
50 = 0.7539 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00724 (0.00267 - 0.01964), b=3.00 (2.77 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (সূত্র
69278): 3.7 ±0.6 se; based on size and trophs of closest relatives
স্থিতিস্থাপক (সূত্র
120179): নিম্ন/ , সর্বনিম্ন প্রজন দ্বিগুনের সময় ৪.৪-১৪ বৎসর (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (72 of 100).
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Nutrients (Ref.
124155): Calcium = 21.8 [4.2, 100.2] mg/100g; Iron = 0.68 [0.18, 1.97] mg/100g; Protein = 19.3 [17.2, 21.2] %; Omega3 = 0.211 [0.096, 0.452] g/100g; Selenium = 25.1 [7.4, 71.4] μg/100g; VitaminA = 7.73 [2.65, 21.92] μg/100g; Zinc = 0.561 [0.278, 1.008] mg/100g (wet weight);
