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Clasificación / Nombres Nombres comunes | Sinónimos | Catalog of Fishes(Género, Especie) | ITIS | CoL | WoRMS | Cloffa
> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Rivulidae (Rivulines) > Rivulinae
Etymology: Rivulus:Latin, rivus = stream (Ref. 45335); tomasi:Named for the German aquarist, adventurer and fish collector Joachim Tomas, co-collector of the species during a survey in 2010. Eponymy: Joachim ‘Charly’ Tomas (1963–2012) was a German killifish hobbyist, aquarist, conservationist, adventurer and fish collector. [...] (Ref. 128868), visit book page.
Entorno: milieu / zona climática / rango de profundidad / gama de distribución Ecología
Madurez: Lm? range ? - ? cm Max length : 3.7 cm SL macho / no sexado; (Ref. 94444); 3.2 cm SL (female)
Descripción breve Claves de identificación | Morfología | Morfometría
Radios blandos dorsales (total) : 8 - 9; Radios blandos anales: 13 - 14. This species is distinguished by the following characters: males with red longitudinal stripes between the rays of the caudal fin, yellow stripe near dorsal and ventral fin margin; females possess brown spots between caudal fin rays; pelvic fins in males moderately long, reaching between 4th and 5th anal fin ray; fin rays, dorsal 8-9, anal 13-14; caudal 30-32; lateral scale rows 39-42 (Ref. 94444). Body shape (shape guide): elongated; Cross section: oval.
Collected alongside a fast running part of a creek that flows down a boulder-strewn area, with a fall of approximately one in every five meters, a place where people find leisure and can slide down the rocky face. This rocky open area is surrounded by a primary forest. This species lives between tree roots and fallen leaves attached to boulders at the edges of the stream, and between boulders. It was also collected a in places where the water ran slower, but was not found in still water surrounding the rocky waterslide. At the time of collection (September 2006), the water at the collecting site was clear, pH 7, 27.6°C, conductivity was <1 μS/cm. (Ref. 94444).
Ciclo vital y comportamiento de apareamiento Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Vermeulen, F.B.M., S. Valdesalici and J.R. Garcia-Gil, 2013. Rivulus tomasi (Teleostei: Cyprinodontiformes: Rivulidae), a new killifish from Tobogán de la Selva, middle Orinoco river drainage in the Amazonas Territory, southwest Venezuela. aqua, Int. J. Ichthyol. 19(4):187-192. (Ref. 94444)
Situación en la Lista Roja de la UICN (Ref. 130435: Version 2025-2 (Global))
Ecología Trófica Alimentos (presas) Composición de la dieta consumo de alimento Raciones de comida Despredadores
Ecología Ecología
Dinámica de la población Coeficiente del crecimiento para Edades / tallas máximas Longitud-peso rel. Longitud-longitud rel. Longitud-frecuencias Conversión de masas Reclutamiento Abundancia
Ciclo de vida Reproducción Madurez Madurez/Gills rel. Fecundidad Puesta Agregaciones de desove Huevos Desarrollo de los huevos Larva Dinámica larvaria
Fisiología Composición corporal Nutrientes Consumo del oxígeno Tipo de natación Velocidad de natación Pigmentos visuales Sonido de peces Enfermedades y parásitos Toxicidad (CL50)
