Gabon country information

Common names: [No common name]
Occurrence: endemic
Salinity: freshwater
Abundance: | Ref:
Importance: of no interest | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Type locality of the holotype of Aphyosemion alpha: 'PK 17,7 and der Straße vom Flugplatz Libreville (Hotel Gamba) zum Cap Estérias Fundort-Code "LEC 93/26", nordwestliches Gabun' (Ref. 41203). Known from localities between Libreville and Cap Esterias in northwestern Gabon (Ref. 41203, 80395) and Owendo area south of Libreville (Ref. 119374).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/gb.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: van der Zee, J.R., T. Woeltjes and R.H. Wildekamp, 2008
National Database:

Common names from other countries

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

> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Nothobranchiidae (African rivulines)
Etymology: Aphyosemion: Greek, aphye, -es, sardine, anchovy + Greek, semeion = mark, signal (Ref. 45335).

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

; acqua dolce pelagico; pH range: 5.7 - ?; non migratori; distribuzione batimetrica 0 - ? m. Tropical; 23°C - ?

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

Africa: known from a limited number of localities between Libreville and Cap Esterias in north-western Gabon (Ref. 80395) and Owendo area south of Libreville in Gabon (Ref. 119374).

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 50.0 cm TL maschio/sesso non determinato; (Ref. 80395); 40.0 cm TL (female)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 0; Raggi dorsali molli (totale) : 12 - 13; Spine anali: 0; Raggi anali molli: 13 - 15; Vertebre: 24 - 25. Diagnosis: This is a fairly large species of the subgenus Chromaphyosemion, larger than all its congeners with the exception of Aphyosemion riggenbachi, which has the most forward placed dorsal fin (Ref. 41203). It is a strictly blue phenotype with a unique red marking on the sides of the body with the exception of the gill lids, with two conspicuous, mood-dependent dark longitudinal bands, with a red dotted dorsal fin, a flamed caudal fin and an "undrawn" anal fin, except for a thin red submarginal and white marginal band, with longer trapezoidal vertical unpaired fins and a caudal fin with short extracts in the males; the female also shows the alpha-shaped mark, with striking, dark bandages and an anal fin without spots, but without a dark mesh pattern around the scales on the sides of the body (Ref. 41203).

This species is found in clear creeks under forest cover, usually over a sandy soil, in the coastal plain (Ref. 80395).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

van der Zee, J.R., T. Woeltjes and R.H. Wildekamp, 2008. Aplocheilidae Bleeker, 1860. p. 80-240. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) Poissons d'eaux douces et saumâtres de basse Guinée, ouest de l'Afrique centrale/The fresh and brackish water fishes of Lower Guinea, west-central Africa. Volume 2. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 603 p. (Ref. 80395)

IUCN Red List Status (Ref. 130435)

Endangered (EN) (B1ab(iii)); Date assessed: 16 February 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Pesca: di nessun interesse; Acquario: Potenziale

FAO(Publication : search) | FishSource |

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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=0.01096 (0.00449 - 0.02680), b=2.92 (2.71 - 3.13), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.7 ±0.5 se; based on size and trophs of closest relatives

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (40 of 100).

Aphyosemion alpha Huber, 1998