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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.

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterigi (pesci con pinne raggiate) > 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

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

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | 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).

Size / Peso / Age

Maturity: Lm ?  range ? - ? cm
Max length : 35.0 cm TL maschio/sesso non determinato; (Ref. 3820)

Short description Morfologia | Morfometria

Spine dorsali (totale): 0; Raggi dorsali molli (totale): 67-84; Raggi anali molli: 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     Glossario (es. 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 Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

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)

IUCN Red List Status (Ref. 120744)

  Least Concern (LC) ; Date assessed: 16 February 2009

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Pesca: ; Acquario: Commerciale
FAO(Publication : search) | FishSource |

Informazioni ulteriori

Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
Stocks
Ecologia
Dieta
Prede
Consumo di cibo
Razione
Nomi Comuni
Sinonimi
Metabolismo
Predatori
Ecotossicologia
Riproduzione
Maturità
Deposizione
Spawning aggregation
Fecundity
Uova
Egg development
Age/Size
Accrescimento
Length-weight
Length-length
Length-frequencies
Morfometria
Morfologia
Larve
Dinamica popolazioni larvali
Reclutamento
Abbondanza
Bibliografia
Acquacoltura
Profilo di acquacoltura
Varietà
Genetica
Frequenze alleliche
Ereditarietà
Malattie
Elaborazione
Mass conversion
Collaboratori
Immagini
Stamps, Coins Misc.
Suoni
Ciguatera
Velocità
Modalità di nuoto
Area branchiale
Otoliths
Cervelli
Vista

Strumenti

Special reports

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Fonti Internet

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia(Go, ricerca) | World Records Freshwater Fishing | Zoobank | Zoological Record

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).
Trophic Level (Ref. 69278):  3.3   ±0.46 se; Based on food items.
Resilienza (Ref. 69278):  Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (28 of 100) .
Price category (Ref. 80766):   Unknown.