Actinopteri (ray-finned fishes) > Cypriniformes
(Carps) > Danionidae
(Danios) > Chedrinae
Etymology: Opsaridium: Greek, opsarion, -ou = a little portion fish (Ref. 45335). More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; potamodromous (Ref. 51243); depth range - m (Ref. ), usually - m (Ref. ). Tropical; 0°C - ; 9°S - 15°S
Africa: Endemic to Lake Malawi.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 47.0 cm TL male/unsexed; (Ref. 2801)
Caught in ringnets. Also caught by means of the angling method (Ref. 4967). Occurs in shallow water over sandy plains, but can also be seen in open water. A hunting predator which chases Engraulicypris sardella (Ref. 5595).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Lévêque, C. and J. Daget, 1984. Cyprinidae. p. 217-342. 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. 2801)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: commercial; aquarium: commercial
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00316 - 0.01588), b=3.05 (2.86 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (49 of 100) .
Nutrients (Ref. 124155
): Calcium = 184 [111, 330] mg/100g ; Iron = 1.69 [1.09, 2.72] mg/100g ; Protein = 17.5 [16.7, 18.3] % ; Omega3 = 0.368 [0.187, 0.725] g/100g ; Selenium = 64.4 [23.7, 136.8] μg/100g ; VitaminA = 62.5 [22.8, 174.6] μg/100g ; Zinc = 1.46 [1.02, 2.09] mg/100g (wet weight);