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Cypriniformes (Carps) >
Cyprinidae (Minnows or carps) > Smiliogastrinae
Etymology: Enteromius: Greek, enteron = intestine + Greek, myo, mys = muscle (Ref. 45335); oraniensis: Named for its type locality, the Orange River system to which the species is endemic; noun in apposition,.
Meio ambiente: milieu / Zona climática / intervalo de profundidade / faixa de distribuição
Ecologia
; Água doce bentopelágico. Subtropical
Africa: South Africa (Orange River system).
Tamanho / Peso / Idade
Maturidade: Lm ?  range ? - ? cm
Max length : 8.5 cm TL macho/indeterminado; (Ref. 93592)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
This species is distinguished by a lateral line that is incomplete (2-33; mode 15) and oral barbels that are inconspicuous (Ref. 124213).
Cross section: compressed.
Reports on extensive studies of the biology and ecology of this species, were mainly focused on populations from Lake Le Roux in the Orange River system. The species occurs in a number of habitats ranging from tributaries to mainstem sections of rivers and man-made impoundments where it is usually associated with vegetated areas. Observed early maturation in the first year of life, high reproductive effort, having multiple clutches per year and rapid growth rate are important traits that makes this species highly adaptable to habitats that are prone to regular input of high silt loads and experience extreme variation in flow regimes, ranging from devastating floods to erratic flows. Reported spawning events occur following the onset of rainfall in summer, where fish spawn locally, although spawning migration has been occasionally observed, with adhesive eggs laid in flooded marginal vegetation, This species has early maturity (attains 4.0 cm FL in first year), high reproductive rate (a female of 6.3 cm can have up to 3250 eggs) and a protracted reproductive season (up to 6 months) with individuals able to have multiple clutches. These traits allow survival in the dryland southern tributaries of the Orange River system that drain the Great Karoo (Ref. 124213).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Kambikambi, M.J., W.T. Kadye and A. Chakona, 2021. Allopatric differentiation in the Enteromius anoplus complex in South Africa, with the revalidation of E. cernuus and E. oraniensis, and description of a new species, E. mandelai (Teleostei: Cyprinidae). J. Fish Biol. 99(3):931-954. (Ref. 124213)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2025-2 (Global))
Ameaça para os humanos
Harmless
Uso pelos humanos
Pescarias: sem interesse
Ferramentas
Relatórios especiais
Baixar XML
Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01096 (0.00511 - 0.02351), b=3.02 (2.85 - 3.19), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Nível Trófico (Ref. 69278) |
3.0 ±0.3 se; based on size and trophs of closest relatives |
Resiliência (Ref. 120179) |
Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.). |
Vulnerabilidade da pesca (Ref. 59153) |
Low vulnerability (13 of 100). 🛈 |