Actinopterygii (ray-finned fishes) >
Characiformes (Characins) >
Distichodontidae (Distichodus)
Etymology: Nannocharax: Latin, nannus = small + Greek, charax = a marine fish without identification (Ref. 45335).
Environment / Climate / Range
Ecology
Freshwater; pelagic; pH range: 6.5 - 7.5; dH range: ? - 15. Tropical; 22°C - 26°C (Ref. 13614), preferred ?; 11°S - 21°S
Africa: Cunene, Okavango, upper Zambezi, Kafue (middle Zambezi) and in the Zambian Congo River system (Ref. 52193), including Lakes Bangweulu and Mweru.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 6.0 cm TL male/unsexed; (Ref. 7094)
Short description
Morphology | Morphometrics
Prefers vegetated margins of rivers and oxbow lagoons or shallow lakes; picks small invertebrates and epiphyton from stems of plants and roots; breeds in summer (Ref. 7248, 52193). Known to make seasonal movements onto floodplains during rainy season (Ref. 13337). Maximum size about 45mm SL; attractive and peaceful aquarium species (Ref. 52193).
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. 109396)
CITES (Ref. 94142)
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: of no interest; aquarium: commercial
More information
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
Age/SizeGrowthLength-weightLength-lengthLength-frequenciesMorphometricsMorphologyLarvaeLarval dynamicsRecruitmentAbundance
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), based on all LWR estimates for this body shape (Ref.
93245).
Trophic Level (Ref.
69278): 2.8 ±0.25 se; Based on food items.
Resilience (Ref.
69278): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref.
59153): Low vulnerability (10 of 100) .