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Clarias angolensis Steindachner, 1866

Angolian walking catfish
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Native range | All suitable habitat
This map was computer-generated and has not yet been reviewed.
Clarias angolensis   AquaMaps   Data sources: GBIF OBIS
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Image of Clarias angolensis (Angolian walking catfish)
Clarias angolensis
Picture by Shandikov, G.A.

Classificação / Names Nomes comuns | Sinónimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (peixes com raios nas barbatanas) > Siluriformes (Catfish) > Clariidae (Airbreathing catfishes)
Etymology: Clarias: Greek, chlaros = lively, in reference to the ability of the fish to live for a long time out of water.  More on author: Steindachner.

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

; gua doce demersal; pH range: 7.0 - 9.0; dH range: 15 - 40.   Tropical; 23°C - 28°C (Ref. 2060); 3°N - 5°S

Distribuição Países | Áreas FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Africa: lower and middle Congo River basin including Ubangi and Kasai drainages (Ref. 248). Also reported from the Maiko-Loboya (lower Lualaba)(Ref. 106245). Also present in the lower Ogooué in Gabon, and the Kouilou and Chiloango in Republic of Congo (Ref. 81644).

Tamanho / Peso / Idade

Maturity: Lm ?  range ? - ? cm
Max length : 35.0 cm TL macho/indeterminado; (Ref. 3820)

Descrição breve Morfologia | Morfometria

Espinhos dorsais (total): 0; Raios dorsais moles (total): 67-84; Raios anais moles: 55 - 69. Diagnosis: head length 22.3-27.1% SL (Ref. 101841). Head pointed in dorsal outline; snout slightly rounded; eyes dorsally located (Ref. 248). Interorbital distance 41.4-48.6% HL (Ref. 81644, 101841). Tooth plates relatively small (Ref. 248), width of premaxillary tooth plate 24.3-30.7% HL, and of vomerine tooth plate 20.9-27.5% HL (Ref. 81644, 101841). Maxillary barbel length 105.1-195.3% HL; outer mandibular barbel length 95.0-134.5% HL (Ref. 81644, 101841). Nasal barbel length 72.1-130.2% HL; inner mandibular barbel length 72.4-108.9% HL (Ref. 81644). Frontal fontanelle long and narrow (`knife-shaped'); occipital fontanelle oval- shaped and relatively large; supraorbital and the `dermosphenotic' joined by a common suture in specimens over 70 mm SL; dorsal and anal fin nearly reaching caudal fin, but not confluent; gill rakers long and slender, increasing with age (Ref. 248). Openings of secondary canals along lateral line visible as irregularly placed white spots on the body (Ref. 248, 81644). Pectoral spine strongly serrated on outside and inside (Ref. 81644, 101841). Surface of cleithrum exposed through skin is intermediate; inner angle formed by both paired bones sharp; cleithrum length 13.0-18.6% HL; dorsal fin length 65.1-73.8% SL; distance from dorsal to caudal fin 0.9-2.7% SL (Ref. 101841). 10-23 gill rakers on first arch (Ref. 81644). Colouration: preserved specimens with uniform colouration; dorsum, flanks and dorsal parts of paired fins dark brown, ventrum and ventral parts of paired fins pale brown to grey (Ref. 248, 81644, 101841). Some specimens may show irregular pattern of small white spots on body (Ref. 101841).

Biologia     Glossário (ex. epibenthic)

Inhabits rivers, lakes and swamps. Feeds on a variety of food like algae, plants, Hydracarina, larvae of Ephemeroptera, Chironomidae, Ceratopogonidae, remains of remains (Coleoptera) and fish remains (Cichlidae, Anabantidae) (Ref. 248). Maximum size reported in Lower Guinea is 317mm TL (Ref. 81644).

Life cycle and mating behavior Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

Referência principal Upload your references | Referências | Coordenador | Colaboradores

Teugels, G.G., 1986. A systematic revision of the African species of the genus Clarias (Pisces; Clariidae). Ann. Mus. R. Afr. Centr., Sci. Zool., 247:199 p. (Ref. 248)

Categoria na Lista Vermelha da IUCN (Ref. 120744)

  Preocupação menor (LC) ; Date assessed: 16 February 2009

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para o homem

  Harmless





Utilização humana

Pescarias: ; Aquário: Espécies comerciais
FAO(Publication : search) | FishSource |

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00759 (0.00340 - 0.01694), b=2.99 (2.81 - 3.17), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  3.3   ±0.46 se; Based on food items.
Resiliência (Ref. 69278):  Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Vulnerabilidade (Ref. 59153):  Low to moderate vulnerability (28 of 100) .
Categoria de preço (Ref. 80766):   Unknown.