Bathyclarias nyasensis (Worthington, 1933)

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Bathyclarias nyasensis
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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) > Clariidae (Airbreathing catfishes)
Etymology: Bathyclarias: Greek, bathys = deep + Latin, clarias, -a, -um = shining (Ref. 45335).

Issue
The species Bathyclarias ilesi Jackson, 1959, Bathyclarias loweae Jackson, 1959, and Dinotopterus jacksoni Greenwood, 1961 are considered valid in Eschmeyer (CofF ver. Mar. 2011: Ref. 86697) following Ferraris (2007: Ref. 58032), and Seegers (2008: Ref. 78218). These are treated here as synonyms of Bathyclarias nyasensis following Snoeks (2004: Ref. 55909).

Environment: milieu / climate zone / depth range / distribution range Écologie

; eau douce benthopélagique; profondeur 20 - 90 m (Ref. 4967).   Tropical; 9°S - 15°S

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

Africa: Endemic to Lake Malawi.

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 100.0 cm SL mâle / non sexé; (Ref. 4967)

Biologie     Glossaire (ex. epibenthic)

Occurs in open water and mainly filters zooplankton. Also feeds on small fishes and insect larvae (Ref. 5595). Forms groups when feeding on plankton and insect larvae (Ref. 5595). Sometimes feeds at the surface (Ref. 4967). It feeds on other fishes, but grain, insects (e.g. Corethra edulis) and small crustaceans have also been found in stomach contents (Ref. 78218). A female was caught at Nkhata Bay at between 20 and 50 m of depth (Ref. 78218).

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

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Anseaume, L. and G.G. Teugels, 1999. On the rehabilitation of the clariid catfish genus Bathyclarias endemic to the East African Rift Lake Malawi. J. Fish Biol. 55(2):405-419. (Ref. 33565)

Statut dans la liste rouge de l'IUCN (Ref. 120744)

  Préoccupation mineure (LC) ; Date assessed: 20 June 2018

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: commercial; Aquarium: Commercial
FAO(Publication : search) | FishSource |

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00316 - 0.01588), b=2.99 (2.81 - 3.17), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  3.7   ±0.58 se; Based on food items.
Résilience (Ref. 69278):  Faible, temps minimum de doublement de population : 4,5 à 14 années (Preliminary K or Fecundity.).
Vulnérabilité (Ref. 59153):  High vulnerability (63 of 100) .
Catégorie de prix (Ref. 80766):   Unknown.