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> Characiformes (Characins) > Alestidae (African tetras)
Etymology: Ladigesia: After Dr. Ladiges, ichthyologist, 1935; he studied killifishes.
More on author: Géry.

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

; zoet water pelagisch; pH range: 6.0 - 7.0; dH range: ? - 10. Tropical; 22°C - 26°C (Ref. 1672)

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Africa: Kasewe in the Gbangbaia basin (small stream systems west of Jong) in Sierra Leone (Ref. 2880, 81279). Also appears to be present in Du River (Ref. 13331).

Grootte / Gewicht / Leeftijd

Maturity: L_m ? range ? - ? cm
Max length : 3.1 cm SL mannelijk / geslacht onbekend; (Ref. 2880)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Anale stekels: 0; Anale zachte stralen: 16 - 17. Diagnosis: small, elongate fish with incomplete lateral line; scaleless dorsal part (of about at least 3 scale rows wide on both sides) from behind the opercle to the adipose fin; parietal fontanella open (Ref. 2880, 81279).

Monospecific.

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Paugy, D., 1990. Characidae. p. 195-236. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres de l'Afrique de l'Ouest. Tome I. Coll. Faune Tropicale n° XXVIII. Musée Royal de l'Afrique Centrale, Tervuren et O.R.S.T.O.M., Paris, 384 p. (Ref. 2880)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Ernstig bedreigd (CR) (B2ab(iii)); Date assessed: 06 May 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

Visserij: commercieel; Aquarium: Commercieel

FAO - Publication: search | FishSource |

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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01148 (0.00528 - 0.02495), b=3.00 (2.82 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

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

Weerstandsvermogen (Ref. 120179): Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).

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

Prijsklasse (Ref. 80766): Unknown.

Ladigesia roloffi Géry, 1968