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Siluriformes (Catfishes) >
Bagridae (Bagrid catfishes)
Etymology: Bagrus: Mozarabic, bagre, taken from Greek, pagros = a fish (Dentex sp.) (Ref. 45335).
More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce demersale. Tropical; 3°S - 5°S
Africa: River Pangani (Tanzania)(Ref. 3236) and Lake Chiuta (Ref. 46841).
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 44.7 cm TL maschio/sesso non determinato; (Ref. 52249)
Spine dorsali (totale): 1; Raggi dorsali molli (totale): 9-10; Raggi anali molli: 13 - 14. Head much depressed, smooth above or finely striated on sides of elongate fontanelle; premaxillary band of teeth 5-6 times as long as broad, nearly as broad as the band of vomerine teeth; snout truncate (Ref. 2988). Snout projecting beyond lower jaw (Ref. 52162, Ref. 2988). Maxillary barbel 1.66-2 times head length, reaching pelvics (Ref. 52162), but not passing the base of the pelvics (Ref. 1884). Nasal barbel 1/5-1/3 of head length; inner mandibular barbel 0.33-0.4 times head length (Ref. 2988). Outer mandibular barbel 0.60-0.66 times head length (Ref. 52162, Ref. 2988). Occipital processus long and narrow, almost reaching the interneural (Ref. 52249). Last ray of dorsal fin above vertical of first ray of pelvics; dorsal spine smooth, feeble; adipose fin 4-5.5 times as long as deep, about twice as long as dorsal fin; caudal fin deeply forked, with pointed lobes (Ref. 2988). Upper lobe of caudal fin with short filament (Ref. 52249). Pectoral spine moderately strong, smooth, or very slightly serrated behind (Ref. 2988).
Coloration: brown or olive above, white beneath; black dots sometimes scattered on the back and on the adipose and caudal fins (Ref. 2988).
Present in the deeper waters of large rivers (Ref. 4967).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Risch, L.M., 1986. Bagridae. p. 2-35. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 3236)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Pesca: commerciale
Informazioni ulteriori
Nomi ComuniSinonimiMetabolismoPredatoriEcotossicologiaRiproduzioneMaturitàDeposizioneSpawning aggregationFecundityUovaEgg development
BibliografiaAcquacolturaProfilo di acquacolturaVarietàGeneticaElectrophoresesEreditarietàMalattieElaborazioneNutrientsMass conversion
CollaboratoriImmaginiStamps, Coins Misc.SuoniCiguateraVelocitàModalità di nuotoArea branchialeOtolithsCervelliVista
Strumenti
Special reports
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Fonti Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00384 - 0.01800), b=2.95 (2.77 - 3.13), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.8 ±0.9 se; based on size and trophs of closest relatives
Resilienza (Ref.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Assuming Fec>10,000).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (35 of 100).
