Actinopteri (ray-finned fishes) > Characiformes
(Characins) > Distichodontidae
Etymology: Eugnathichthys: Greek, eu = good + Greek, gnathos = jaw + Greek, ichthys = fish (Ref. 45335). More on author: Boulenger.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; pelagic; pH range: 6.5 - 7.5; dH range: ? - 15; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 23°C - 27°C (Ref. 13614)
Africa: widespread in the Congo River basin, from the lower Congo basin (Ref. 41594, 94471) up to the upper Lualaba (Ref. 2970), in Cameroon, Central African Republic, Republic of Congo and Democratic Republic of the Congo. Also in the Chiloango River basin (Ref. 81638, 94471) in Cabinda Province of Angola and Democratic Republic of the Congo.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 14.5 cm TL male/unsexed; (Ref. 7094)
Morphology | Morphometrics
soft rays: 12. Diagnosis: moderately elongate; well-developed snout of moderate length and moderately sized scales; 67-72 scales along lateral line; caudal fin with 3 transverse bars across each lobe; dorsal fin with series of black spots forming horizontal stripes in spread fin (Ref. 81638).
Feeds on small fishes (Ref. 13614).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Daget, J. and J.-P. Gosse, 1984. Distichodontidae. p. 184-211. 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. 7094)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00147 - 0.00981), b=3.11 (2.88 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.2 ±0.73 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .