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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Cynolebiinae
Eponymy: Charles J Simpson, California, was a friend of the author. We have been unable to find further details. (Ref. 128868), visit book page.
More on authors: Costa & Brasil.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bentopelagisk; ej vandrande. Tropical
South America: Middle Tocantins River basin, Brazil.
Size / Vikt / Age
Maturity: Lm ?  range ? - ? cm
Max length : 4.6 cm SL hane/ej könsbestämd; (Ref. 49550)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Mjukstrålar i ryggfenan (totalt) : 17 - 28; Mjukstrålar i analfenan: 21 - 28; Ryggkotor: 26 - 28. Bars on anal and caudal fins of male. Anal fin of female long, spatulated, and long posterior process of occipital, terminating in narrow posterior extension. Males with numerous rays in dorsal and anal fins. Dorsal-fin rays 25-28 in male, 17-21 in female; anal-fin rays 23-28 in male, 21-24 in female; caudal-fin rays 23-26, caudal fin subtruncate in male, rounded in female (Ref. 49550).
Bottom spawner, ? months incubation (Ref. 27139).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Costa, W.J.E.M., 2003. Rivulidae (South American Annual Fishes). p. 526-548. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 36579)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).