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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.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bentopelagisk. Tropical
South America: Colombia and possibly Brazin and Venezuela.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 3.6 cm SL hane/ej könsbestämd; (Ref. 130065)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
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).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
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Harmless
Mänskliga användningsområden
Fiskeri: saknar intresse
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00661 (0.00312 - 0.01398), b=3.10 (2.92 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-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.). |
Sårbarhet i fisket (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |