Classification / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: amanan: Named for the Amanã Sustainable Development Reserve, state of Amazonas, Brazil..
More on authors: Costa & Lazzarotto.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
; sötvatten bentopelagisk; djupintervall 0 - 1 m (Ref. 78702). Tropical
South America: Brazil.
Size / Vikt / Age
Maturity: Lm ?  range ? - ? cm
Max length : 2.8 cm SL hane/ej könsbestämd; (Ref. 78702); 2.8 cm SL (female)
Collected from a flooded forest area adjacent to the igarapédo Baré and the channel connecting it to lago da Beleza, an oxbow lake in the floodplains of the igarapé Baré. The area is subjected to average water level variations between 10-12 m, that environmental conditions vary enormously. Sampling was done in November and January, where water was black with high transparency, with substrate composed by at about 0.2 to
Life cycle and mating behavior
Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver
Costa, W.J.E.M. and H. Lazzarotto, 2008. Rivulus amanan, a new killifish from the Japurá river drainage, Amazonas river basin, Brazil (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwat. 19(2):129-134. (Ref. 78702)
IUCN Red List Status (Ref. 130435)
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=0.00977 (0.00315 - 0.03034), b=3.03 (2.78 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.1 ±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).