Angola 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 westwards flowing rivers Cuvo and Cubal (=Bero) (Ref. 11970, 42110) and the upper reaches of the Cunene, Okavango and Zambezi; possibly also in the headwaters of other coastal rivers (Ref. 52193). Report from the "Cuanza (Atlantic coastal)" (Ref. 120641) probably refers to the Cuanzan drainage basin or Cuanza Ichthyological Province, including various Angolan coastal basins, and not (only) the Cuanza river basin. Type locality: Mount Moco (Cuvo River system) (Ref. 42110). Also Ref. 3565, 4537, 7248, 13721.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ao.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Trewavas, E., 1936
National Database:

Common names from other countries

Western kneria, Northern kneria, 波氏克奈鱼, ... more

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Gonorynchiformes (Milkfishes) > Kneriidae (Shellears)
Etymology: Kneria: From Kner, that studied fishes in the Imperial Museum of Vienna, with Jean Natterer (1817) (Ref. 45335); polli: Named after Dr. Max Poll, who first recognized the opercular apparatus of Xenopomatichthys to be a character of the mature male, and not generic (Ref. 42110).
More on author: Trewavas.

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

; acqua dolce benthopelagico. Tropical; 10°S - 17°S

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Africa: rivers Cuvo and Cubal in Angola (Ref. 11970), possibly also in other coastal rivers in Angola (Ref. 52193). Also in the upper reaches of the upper Zambezi, Okavango and Kunene in Angola and Zambia (Ref. 52193), and the Kafue in Zambia (Ref. 13332). Presence in the upper Congo river basin (Ref. 41590, 52959) considered questionable in Ref. 2970, but considered present in the southern Congo River basin in Angola (Ref. 120641). Not yet captured in Namibia (Ref. 33857).

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 7.0 cm SL maschio/sesso non determinato; (Ref. 52193)

Short description Morfologia | Morfometria

Spine dorsali (totale): 0; Raggi dorsali molli (totale): 9-11; Spine anali 0; Raggi anali molli: 10 - 12. Diagnosis: body depth 5.5-6.6 times in standard length (SL); head length 4.75-5.25 times in SL (Ref. 11970, 42110). Head width a little less than head depth at occipital region, 1.75-2 times in head length (HL) (Ref. 42110). Snout 3-3.4 times in HL; eye diameter 3.4-4.17 times in HL; interorbital width 2.75-3.4 times in HL; eyes lateral (Ref. 11970, 42210). Mature males with cupped outgrowth on operculum and a series of oblique laminae behind gill-opening (Ref. 11970, 42110), and without spines on head (Ref. 42110). Dorsal fin origin equidistant from tip of snout and base of caudal (Ref. 11970, 13721, 42110) or nearer mid-base of caudal than tip of snout (Ref. 7248, 52193), above (Ref. 42110) or immediately behind base of pelvic (Ref. 11970, 13721, 42110). Anal fin base equidistant from origin of pelvic and root of caudal (Ref. 42110), or a little nearer caudal (Ref. 11970, 42110). Pectoral fin length 5/6 of head length (Ref. 42110) or nearly as long as head (Ref. 11970, 42110). Pelvic fin as long as or a little shorter than pectoral (Ref. 42110). Caudal peduncle 1.9-2.1 times as long as deep (Ref. 11970, 42110). Body yellowish, with a series of dark spots, united by a narrower band, along lateral line or its posterior 2/3; a series of 3-5 round dark spots on either side of middorsal line in front of dorsal fin; sometimes a spot at origin of dorsal; fainter dark markings along back and side; upper part of head dark, lower parts of head and trunk pale; caudal fin spotted or clear, other fins clear (Ref. 42110). Dark spots at bases of pectoral, ventral and anal fins (Ref. 13721), but no dark spot at base of pelvic fins of type specimens (Ref. 7248, 52193).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Poll, M., 1984. Kneriidae. p. 129-133. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 3565)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 01 March 2007

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

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
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
Electrophoreses
Ereditarietà
Malattie
Elaborazione
Mass conversion

Collaboratori
Immagini
Stamps, Coins Misc.
Suoni
Ciguatera
Velocità
Modalità di nuoto
Area branchiale
Otoliths
Cervelli
Vista

Strumenti

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Nomi Comuni | Photos

Fonti Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Kneria polli Trewavas, 1936