Overview

Comprehensive Description

Biology

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. (Ref. 26673)
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Distribution

Range Description

Save River in Zimbabwe south to the Phongolo River in KwaZulu-Natal, South Africa. No recent records in Zimbabwe and possibly extinct there.
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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.
  • 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)
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Southeastern Africa.
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Physical Description

Morphology

Dorsal soft rays (total): 10 - 11; Analsoft rays: 14 - 16
  • 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)
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Size

Max. size

8.3 cm SL (male/unsexed; (Ref. 26673)); max. reported age: 6 years (Ref. 26673)
  • 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)
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Typically found in pools below fast flowing waters, juveniles often in very shallow water running over sand or gravel bars.

Systems
  • Freshwater
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Environment

benthopelagic; freshwater
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Opsaridium peringueyi

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 2
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2007

Assessor/s
Bills, R., Engelbrecht J. & Marshall, B.E.

Reviewer/s
Snoeks, J. (Freshwater Fish Red List Authority) & Darwall, W. (Freshwater Biodiversity Assessment Programme)

Contributor/s

Justification
Although reductions have occurred within the Limpopo River system in Zimbabwe it is widespread and fairly common throughout the remainder of its range.

History
  • 1996
    Vulnerable
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Population

Population
During the 1980/90s numbers assessed in Mpumalanga were very low. A significant increase in population numbers has occurred during the last decade. In recent Swaziland surveys it was abundant in suitable swift flowing habitats.

Population Trend
Unknown
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Threats

Major Threats
Flow regulation and water pollution in parts of the Limpopo River have significantly reduced the species range. In Zimbabwe regulation of flows by dams, sedimentation of habitats, pollution from agriculture and alien fishes (Micropterus spp.) have probably effected its decline.
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Least Concern (LC)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
River health programmes and in-stream flow requirement assessments are in operation in most areas in South Africa.
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Wikipedia

Opsaridium peringueyi

Opsaridium peringueyi, the Southern dwarf minnow, is a species of cyprinid fish found in the countries of Mozambique, South Africa and Swaziland.

References[edit source | edit]


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