Congo (Brazzaville) country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from the middle Congo River basin (Ref. 114931) in the rivers Léfini (Ref. 114931), Alima (Ref. 52343, 114931), Likouala, Sangha and Likouala-aux-Herbes (Ref. 114931). Type locality of the holotype of Xenocharax crassus: 'Leketi (Alima moyen)' (Ref. 52343).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/cf.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Ibala Zamba, A., V. Mamonekene, E. Vreven and M.L.J. Stiassny, 2016
National Database:

Common names from other countries

Yelele, ... more

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

> Characiformes (Characins) > Distichodontidae (Distichodus)
Etymology: Xenocharax: Greek, xenos = strange + Greek, charax = a marine fish without identification (Ref. 45335).

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

; süßwasser benthopelagisch. Tropical

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

Africa: middle Congo River basin in Congo Republic (Ref. 52343, 114931), Democratic Republic of the Congo (Ref. 93897, 114931) and Cameroon (Ref. 114931).

Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 18.6 cm SL Männchen/unbestimmt; (Ref. 124477)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 0; Rückenflossenweichstrahlen (insgesamt) : 18 - 22; Afterflossenstacheln: 0; Afterflossenweichstrahlen: 13 - 15. Diagnosis: Xenocharax crassus is distinguished from Xenocharax spilurus by the presence of a large black mark located anteriorly on the dorsal fin, vs. absence; a small, round, black spot at the posterior half of the caudal peduncle and covering a total of 4 to 6 scales, ±2 to 3 scales in horizontal and vertical direction alike, vs. a large ovoid spot covering a total of about 35 to 46 scales, ±8 to 10 scales in horizontal and vertical direction alike; and a wider mouth, 29-34% of head length vs. 24-29% (Ref. 114931). In addition, for the specimens of similar sizes, X. crassus has a shorter dorsal-adipose distance than X. spilurus; further, most X. crassus specimens have 6 supraneurals vs. 7 in X. spilurus (Ref. 52343, 114931).

Found almost exclusively in forested tributaries or in savannah streams under dense gallery forest (Ref. 114931).

Life cycle and mating behavior Maturities | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven

Hauptreferenz Upload your references | Referenzen | Koordinator | Partner

Pellegrin, J., 1900. Poissons nouveaux du Congo français. Bull. Mus. Natn. Hist. Nat., Paris, 6(3):98-101. (Ref. 52343)

IUCN Rote Liste Status (Ref. 130435)

nicht bedroht (LC) ; Date assessed: 16 February 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.02188 (0.01053 - 0.04545), b=3.04 (2.85 - 3.23), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Trophic level (Ref. 69278): 3.0 ±0.3 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Low vulnerability (13 of 100).

Xenocharax crassus Pellegrin, 1900