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Siluriformes (Catfishes) >
Bagridae (Bagrid catfishes)
Etymology: Hemibagrus: Greek, hemi = the half + Mozarabic, bagre, Greek, pagros = a fish, Dentex sp. (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθικό(ς); ποταμόδρομος (Ref. 51243). Subtropical
Asia: Mekong basin (Ref. 27732). Reported from Chao Phraya, Maeklong and Peninsular Thailand river systems (Ref. 26336).
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 130 cm TL αρσενικό/απροσδιόριστο; (Ref. 30857); common length : 50.0 cm SL αρσενικό/απροσδιόριστο; (Ref. 12693); μεγ. δημοσιευμένο βάρος: 86.0 kg (Ref. )
Ραχιαίες άκανθες (συνολικά) : 1; Μαλακές ραχιαίες ακτίνες (συνολικά) : 7 - 8; Μαλακές εδρικές ακτίνες: 12 - 14; Σπόνδυλοι: 52 - 53. Bright red caudal fin in specimens bigger than about 15 cm SL; whitish in smaller ones (Ref. 27732). Adipose fin long (length of adipose-fin base 18.7-25.7% SL), with a gently-sloping anterior margin; dorsal spine poorly ossified and short (7.5-11.4% SL) without serrations on posterior edge; length of dorsal-fin base 16.3-18.3% SL; maxillary barbels reaching to at least middle of adipose fin base (230.1-297.0% HL) (Ref. 38441). Head flat rather than conical; a short occipital process not close to basal bone of dorsal fin; no stripes on body (Ref. 12693).
Occurs in large upland rivers. Common in areas with rocky bottoms and irregular depths (Ref. 12693). Apparently does not migrate but reproduces locally and enters the flooded forest during high water in July-October (Ref. 38441). Feeds on insects, prawns, fish (Ref. 33813) and crabs (Ref. 38441). Marketed fresh (Ref. 12693). Maximum weight reported for an individual caught in Mae Klong River, Thailand, reached 86 kg (J-F. Helias, pers.comm., 07/2002; see photo Hewyc_u0.jpg).
Life cycle and mating behavior
Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες
Ng, H.H. and W.J. Rainboth, 1999. The bagrid catfish genus Hemibagrus (Teleostei: Siluriformes) in central Indochina with a new species from the Mekong River. Raffles Bull. Zool. 47(2):555-576. (Ref. 38441)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00607 - 0.01980), b=3.00 (2.84 - 3.16), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 3.7 ±0.60 se; based on food items.
Ελαστικότητα (Ref.
120179): Πολύ χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού > 14 έτη (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (78 of 100).
Nutrients (Ref.
124155): Calcium = 16.8 [3.2, 67.2] mg/100g; Iron = 0.731 [0.261, 2.245] mg/100g; Protein = 17.7 [15.6, 19.7] %; Omega3 = 0.35 [0.13, 0.89] g/100g; Selenium = 52.7 [20.1, 125.3] μg/100g; VitaminA = 26.9 [4.8, 146.3] μg/100g; Zinc = 0.82 [0.55, 1.24] mg/100g (wet weight);
