Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Cyprinidae
(Minnows or carps) > Danioninae
Etymology: Opsaridium: Greek, opsarion, -ou = a little portion fish (Ref. 45335).
Environment / Climate / Range
Freshwater; benthopelagic. Subtropical; 15°C - 25°C (Ref. 26673)
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 8.3 cm SL male/unsexed; (Ref. 26673); max. reported age: 6 years (Ref. 26673)
Morphology | Morphometrics
Africa: Save, Limpopo, Incomati, Umbeluzi and Phongola River systems. Generally confined to zones below 1200 m altitude along the lower escarpment and Lowveld of the Northern Province and Mpululanga, Swaziland and Kwazulu/Natal. A relict population: Lephalala River, Limpopo system, in the Waterberg, Northern Province.
Inhabits clear, flowing water in rapids or in stream pools of rivers. Feeds primarily on benthic invertebrates, mainly chironomid and simuliid larvae, and adult insects taken from the surface. Gonadosomatic index indicates that the species is a partial spawner which breeds over an extended period during the spring and summer months.
Skelton, P.H., 1996. A review of Opsaridium zambezense (Pisces: Cyprinidae) from southern Africa with description of a new species from Malawi. Ichthyol. Explor. Freshwat. 7(1):59-84.
IUCN Red List Status (Ref. 90363)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5002 [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 BS (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (tmax=6).
Vulnerability (Ref. 59153
): Low vulnerability (20 of 100) .