You can sponsor this page

Chrysichthys auratus (Geoffroy Saint-Hilaire, 1809)

Golden Nile catfish
Hochladen Photos und videos
Pictures | Google Bild
Image of Chrysichthys auratus (Golden Nile catfish)
Chrysichthys auratus
Picture by KMFRI

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

> Siluriformes (Catfishes) > Claroteidae (Claroteid catfishes)
Etymology: Chrysichthys: Greek, chrysos = golden + Greek, ichthys = fish (Ref. 45335).

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

; süßwasser; brackwasser demersal; potamodrom (Ref. 51243). Tropical; 26°C - 31°C (Ref. 27935); 36°N - 2°N, 16°W - 34°E (Ref. 7324)

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Africa: known from most of the West African hydrographic basins, except in the coastal areas between Gambia and Liberia, where it is replaced by Chrysichthys maurus (Ref. 7324, 57126). Present from southern Liberia to Cabinda (Angola) (Ref. 57126), and widespread throughout Lower Guinea (Ref. 81642). Also reported from the Chad (Ref. 3236, 57126) and Nile (Ref. 3236, 2988, 28663, 78586) basins.

Length at first maturity / Size / Gewicht / Alter

Maturity: Lm 11.0, range 8 - 19 cm
Max length : 57.0 cm TL Männchen/unbestimmt; (Ref. 41031); 35.0 cm SL (female); max. veröff. Gewicht: 0.00 g

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 2; Rückenflossenweichstrahlen (insgesamt) : 5 - 6; Afterflossenstacheln: 0. Diagnosis: 1st branched dorsal-fin ray longest, nearly always extended into a long filament that may reach, or even exceed, the base of the caudal fin; in some individuals or populations (Mafou on the upper Niger; rivers Cross, Ogowe, Nyong; Sanaga estuary) this filament is strongly reduced, but the first branched ray remains the longest (Ref. 57126, 81642). In other populations this filament is particularly elongate (Sanaga mainstream and coastal rivers of Cabinda)(Ref. 81642). Usually 8 branched rays in pectoral fins (Ref. 57126, 81642), rarely 7 or 9 (Ref. 57126, 81642), 2nd and 3rd rays sometimes filamentous (Ref. 57126). Exhibits pronounced intraspecific variability, and a clinal series can be demonstrated in the size of the adipose fin and the number of gill rakers (Ref. 81642). Either 9-13 gill rakers on lower limb of first gill arch and base of adipose fin longer than dorsal-fin base (Nilo-Sudanese region = populations from Nile, Chad, Senegal and the upper courses of the Niger, Comoé, Benue and Volta), or 12-15 lower gill rakers and base of adipose fin shorter than, or equal to, dorsal-fin base (coastal zones from Liberia to Cabinda); populations from the middle and lower courses of coastal rivers in this region are more or less intermediate in regard to these characters (Ref. 57126, 81642). Pronounced dimorphism between mature males in reproductive activity and immature males (Ref. 57126, 81642).

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

In those parts where Chrysichthys maurus and Chrysichthys auratus overlap (from Liberia to Ghana, to the east of the Volta), C. auratus does not enter rivers, but remains in estuaries and lagoons, where both species are sympatric; in the coastal region, C. auratus has been reported as C. filamentosus (Ref. 57126). Found in lakes and coastal rivers (Ref. 3236) and appears to tolerate a certain amount of salt (Ref. 78218). Occurs usually over soft, slightly muddy substrates or substrates with heavy layers of leafy detritus in deep, relatively quiet waters (Ref. 6868). Feeds on mollusks and small crustaceans (Branchiopods, Copepods, Ostracoda) which it digs from the substrate (Ref. 27935), and also on insects (Ref. 28714) and fish (Ref. 28714, 78218).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

Hauptreferenz Upload your references | Referenzen | Koordinator | Partner

Risch, L.M., 2003. Claroteidae. p. 60-96 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref. 57126)

IUCN Rote Liste Status (Ref. 130435: Version 2024-2)

  nicht bedroht (LC) ; Date assessed: 30 April 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

Fischereien: kommerziell
FAO - Publication: search | FishSource |

Mehr Information

Trophic ecology
Nahrungsorganismen
Nahrungszusammensetzung
Nahrungsaufnahme
Food rations
Räuber
Ecology
Ökologie
Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Längenhäufigkeiten
Mass conversion
Rekrutierung
Dichte
Life cycle
Fortpflanzung
Geschlechtsreife
Maturity/Gills rel.
Fecundity
Ablaichen
Spawning aggregations
Eier
Eientwicklung
Larven
Larven Pop.Dyn.
Distribution
Länder
FAO Gebiete
Ecosystems
Vorkommen
Einführungen
BRUVS - Videos
Anatomy
Kiemenoberfläche
Brain
Otolith
Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)
Genetics
Genetik
Heterozygosity
Vererbbarkeit
Human related
Aquaculture systems
Aquakultur Profile
Zuchtlinien
Ciguatera cases
Stamps, coins, misc.
Outreach
Partner
Taxonomy
Namen
Synonyme
Morphologie
Morphometrie
Bilder
References
Referenzen

Tools

Zusatzinformationen

Download XML

Internet Quellen

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher Einträge suchen | CISTI | Catalog of Fishes: Gattung, Arten | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: Genom, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Gehe zu, Suchen | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00782 - 0.01339), b=2.96 (2.90 - 3.02), in cm total length, based on LWR estimates for this species (Ref. 93245).
Trophic level (Ref. 69278):  3.7   ±0.55 se; based on food items.
Generation time: 6.9 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Widerstandsfähigkeit (Ref. 120179):  mittel, Verdopplung der Population dauert 1,4 - 4,4 Jahre. (K=0.16; Fec > 1,000).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (27 of 100).
Preiskategorie (Ref. 80766):   Unknown.