Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Cyprinidae
(Minnows or carps) > Danioninae
Etymology: Opsaridium: Greek, opsarion, -ou = a little portion fish (Ref. 45335). More on authors: Gilchrist & Thompson.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Subtropical; 15°C - 25°C (Ref. 26673)
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.
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
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.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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. (Ref. 26673)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass 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=0.00759 (0.00286 - 0.02011), b=3.04 (2.81 - 3.27), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.2 ±0.4 se; Based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (tmax=6).
Vulnerability (Ref. 59153
): Low vulnerability (20 of 100) .