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> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Rivulidae (Rivulines) > Rivulinae
Etymology: gaucheri: Named for Philippe Gaucher, who found the first specimens, for its fascinating work on Amazonian fauna.
Eponymy: Philippe Gaucher became (2007) Scientific Director of the Centre National de la Recherche Scientifique and Mission Parc de la Guyane, Cayenne, French Guiana. He co-wrote: The Tailless Amphibians of French Guiana (2000). He found the first specimens. (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ecología

; agua dulce bentopelágico; rango de profundidad 0 - ? m (Ref. 78216). Tropical

Distribución Países | Áreas FAO | Ecosistemas | Ocurrencias, apariciones | Point map | Introducciones | Faunafri

South America: Maroni basin in French Guiana.

Tamaño / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 5.7 cm SL macho / no sexado; (Ref. 78216)

Short description Claves de identificación | Morfología | Morfometría

Radios blandos dorsales (total) : 8 - 9; Radios blandos anales: 13 - 15; Vértebra: 31 - 35. Differs from other species of the genus by a combination of characters including dorsal and anal fin ray counts, number of scales in lateral and transverse series, by the lack of the supracaudal spot at all ages in both sexes, a short base dorsal fin, a yellow color background on body, a red colored sub-distal area on anal fin in male, with a yellow one in female, and a dark margin on caudal fin (Ref. 78216).

Occurs in small groups in small mountainous rivers and marshes (Ref. 78216).

Life cycle and mating behavior Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva

Main reference Upload your references | Referencias | Coordinador : Costa, Wilson J.E.M. | Colaboradores

Keith, P., L. Nandrin and P.-Y. Le Bail, 2006. Rivulus gaucheri, a new species of rivuline (Cyprinodontiformes: Rivulidae) from French Guiana. Cybium 30(2):133-137. (Ref. 78216)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Least Concern (LC) ; Date assessed: 01 January 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses

FAO - Publication: search | FishSource |

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Trophic ecology
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00891 (0.00368 - 0.02159), b=3.11 (2.92 - 3.30), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Nivel trófico (Ref. 69278): 3.3 ±0.4 se; based on size and trophs of closest relatives

Resiliencia (Ref. 120179): Alto, población duplicada en un tiempo mínimo inferior a 15 meses (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Anablepsoides gaucheri (Keith, Nandrin & Le Bail, 2006)