Congo (Kinshasa) country information

Common names: Nkonga
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from Pool Malebo (Ref. 41585, 44985), middle Congo River (Ref. 88113), Kasai (Ref. 41591), Lake Mai-Ndombe (Ref. 1877), Lake Tumba (Ref. 41580, 44984), Ngiri River (lower Ubangi tributary)(Ref. 44796), Yenge River (Tshuapa tributary, Ruki drainage) (Ref. 93897) and the Itimbiri (Ref. 106290). Also Ref. 1878, 1879, 2060, 4537, 41585, 41588, 41590, 42848, 44796, 44842, 44912.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/cg.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Matthes, H., 1964
National Database:

Common names from other countries

Stribet bikir, 戴氏多鳍鱼, Zaire-Flösselhecht, ... more

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Cladistii (bichirs) > Polypteriformes (Bichirs) > Polypteridae (Bichirs)
Etymology: Polypterus: Greek, poly = a lot of + Greek, pteron = wing, fin (Ref. 45335); delhezi: Named after M. Delhez, collector of the first specimen of Polypterus delhezi (Ref. 1877).
More on author: Boulenger.

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

Freshwater; demersal. Tropical; 26°C - 28°C (Ref. 2060)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Africa: middle Congo River basin (Ref. 3188) in Democratic Republic of the Congo and Republic of Congo. Reports from the Shari (Chad basin)(Ref. 1878, 3047, 3049) unconfirmed in Ref. 81263.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 44.0 cm TL male/unsexed; (Ref. 42908)

Short description Morphology | Morphometrics

Dorsal spines (total): 10 - 13; Anal spines: 0; Anal soft rays: 11 - 14. Subcylindrical body (Ref. 42908). Upper and lower jaws reaching to the same level, or the lower jaw is a little shorter (Ref. 42873, Ref. 42901, Ref. 42908). Number of dorsal finlets: 10-13 (Ref. 42908, Ref. 51884). Pectoral fin not reaching dorsal fin origin (Ref. 41588). Ganoid scales (Ref. 42908): 52-58 lateral line scales, 36-40 scales around body, 12-17 predorsal scales (Ref. 41588, Ref. 42848, Ref. 42908, Ref. 51884). Dorsal side gray-olive colored, with 7 to 8 black transversal bars; ventral side yellowish, lighter on ventral side of head (Ref. 41580; Ref. 44841). Spots are forming a black line between the lips and suboperculum (Ref. 41580). Fins yellow with brown or black spots (Ref. 41580).

Facultative air-breathing (Ref. 126274); This carnivorous fish lives in streams, lakes and zones of flood (Ref. 41580). Reproduction and spawning occurs during the rainy season (Ref. 41580).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Reproduction occurs during the rainy season (Ref. 41580).

Main reference Upload your references | References | Coordinator | Collaborators

Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. World fishes important to North Americans. Exclusive of species from the continental waters of the United States and Canada. Am. Fish. Soc. Spec. Publ. (21):243 p. (Ref. 4537)

IUCN Red List Status (Ref. 130435)

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

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: subsistence fisheries; aquarium: public aquariums

FAO(Publication : search) | FishSource |

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Internet sources

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00457 (0.00195 - 0.01073), b=3.05 (2.85 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.25 se; based on food items.

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (Fec=2,350; tmax likely > 15 years).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (34 of 100).

Price category (Ref. 80766): Unknown.

Polypterus delhezi Boulenger, 1899