Teleostei (teleosts) >
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
Ecology
Freshwater; pelagic; pH range: 6.0 - 7.0; dH range: ? - 10. Tropical; 22°C - 26°C (Ref. 1672)
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).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 3.1 cm SL male/unsexed; (Ref. 2880)
Anal spines: 0; Anal soft rays: 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.
Life cycle and mating behavior
Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae
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)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Fisheries: commercial; aquarium: commercial
Tools
Special reports
Download XML
Internet sources
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
Trophic level (Ref.
69278): 3.0 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref.
120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).