Classification / Names
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Cyprinodontiformes (Rivulines, killifishes and live bearers) >
Rivulidae (Rivulines) > Rivulinae
Etymology: Rivulus: Latin, rivus = stream (Ref. 45335); flammaecauda: Name from Latin, 'flamma' meaning 'with flames' and 'cauda; for 'tail', referring to the flame-like radial lines on male caudal fins, a trait apparently unique among known Rivulus species.
Environment: milieu / climate zone / distribuzione batimetrica / distribution range
Ecologia
; acqua dolce benthopelagico. Tropical
South America: Colombia and possibly Brazin and Venezuela.
Size / Peso / Age
Maturità: Lm ? range ? - ? cm
Max length : 3.6 cm SL maschio/sesso non determinato; (Ref. 130065)
Short description
Chiavi di identificazione | Morfologia | Morfometria
This species is distinguished by the following characters: short pelvic fins, not reaching insertion of anal-fin base; truncate caudal fin in males; with few scales in the longitudinal series, 37-38 (Ref. 130065).
Cross section: oval.
The type locality, a black water creek was located in primary forest under a thick canopy and where water depth was only a few cms, likely due to the flat terrain. The creek is divided into several smaller streams and covered a wide stretch of the forest floor. Rivulus flammaecauda was more abundant in deeper, open areas (Ref. 130065).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Vermeulen, F.B.M. and D.A. Mejia-Vargas, 2020. Two new sympatric species of the aplocheiloid killifish genus Rivulus (s.l.) (Cyprinodontiformes: Rivulidae) from the Alto Rio Negro, Guainía Dpt., Colombia. Killi-Data Series 2020:22-35. (Ref. 130065)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Pesca: di nessun interesse
Strumenti
Special reports
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Fonti Internet
Estimates based on models
Phylogenetic diversity index (Fonte Biblio.
82804): PD
50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00305 - 0.01429), b=3.10 (2.91 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Fonte Biblio.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Resilienza (Fonte Biblio.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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