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Bagrus orientalis Boulenger, 1902

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Bagrus orientalis
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Classification / Names Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinoptérygiens (poissons à nageoires rayonnées) > Siluriformes (Catfish) > 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 Écologie

; eau douce démersal.   Tropical; 3°S - 5°S

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Africa: River Pangani (Tanzania).

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 44.7 cm TL mâle / non sexé; (Ref. 52249)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 1; Rayons mous dorsaux (Total): 9-10; Rayons mous anaux: 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).

Biologie     Glossaire (ex. epibenthic)

Present in the deeper waters of large rivers (Ref. 4967).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

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)

Statut dans la liste rouge de l'IUCN (Ref. 119314)

  Préoccupation mineure (LC) ; Date assessed: 01 May 2009

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: commercial
FAO(Publication : search) | FishSource |

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Sources Internet

Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(génôme, nucléotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | SeaLifeBase | Arbre de Vie | Wikipedia(aller à, chercher) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5005   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00343 - 0.01679), b=2.97 (2.79 - 3.15), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  3.8   ±0.9 se; Based on size and trophs of closest relatives
Résilience (Ref. 69278):  Haut, temps minimum de doublement de population inférieur à 15 mois (Assuming Fec>10,000).
Vulnérabilité (Ref. 59153):  Moderate to high vulnerability (45 of 100) .
Catégorie de prix (Ref. 80766):   Unknown.