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Xenotoca és un gènere de peixos pertanyent a la família dels goodèids.[3]
Del grec xeno (estranger, estrany) + toko (naixement).[4]
Xenotoca is a genus of fish in the family Goodeidae from Mexico, where found in a wide range of habitats, from rivers and creeks to pools and lakes, in the Lerma–Grande de Santiago, Panuco, Cuitzeo and other basins of the Mesa Central. While no goodeid is a very common aquarium fish, the redtail splitfin (X. eiseni), is one of the most common aquarium goodeids. Its relatively bright colors offset its reputation for being aggressive towards tankmates, occasionally even killing them.[2] Similarly to that species, two species described in 2016 have males with red-orange tails, but this feature is not shared by the remaining members of the genus.[3] The Xenotoca species are small, reaching up to 9 cm (4 in) in standard length.[4]
There are currently five recognized species in this genus,[3][5] but two possibly undescribed species, tentatively referred to as Xenotoca cf. melanosoma and Xenotoca cf. variata, are known.[6][7]
Genetic work has shown that the genus, as currently defined, is not monophyletic: The type species X. variata is distantly related to the remaining, which eventually will be reallocated to their own genus.[3] Phylogenic research by Shane Webb showed that the closest relative of X. variata is the butterfly goodeid, Ameca splendens.[8]
Xenotoca is a genus of fish in the family Goodeidae from Mexico, where found in a wide range of habitats, from rivers and creeks to pools and lakes, in the Lerma–Grande de Santiago, Panuco, Cuitzeo and other basins of the Mesa Central. While no goodeid is a very common aquarium fish, the redtail splitfin (X. eiseni), is one of the most common aquarium goodeids. Its relatively bright colors offset its reputation for being aggressive towards tankmates, occasionally even killing them. Similarly to that species, two species described in 2016 have males with red-orange tails, but this feature is not shared by the remaining members of the genus. The Xenotoca species are small, reaching up to 9 cm (4 in) in standard length.
Xenotoca es un género de peces de la familia de los Goodeidae en el orden de los Cyprinodontiformes.[2] [3]
Se reconocen las siguientes:[2]
Xenotoca es un género de peces de la familia de los Goodeidae en el orden de los Cyprinodontiformes.
Xenotoca est un genre de poisson de la famille des Goodeidae et de l'ordre des Cyprinodontiformes du Mexique.
Selon FishBase (30 juillet 2017)[1] et World Register of Marine Species (30 juillet 2017)[2] :
Xenotoca est un genre de poisson de la famille des Goodeidae et de l'ordre des Cyprinodontiformes du Mexique.
Xenotoca è un genere di pesci d'acqua dolce appartenenti alla famiglia Goodeidae ed alla sottofamiglia Goodeinae.
Tutti i membri del genere Xenotoca vivono negli altopiani del Messico.
Come tutti i membri di questa sottofamiglia, sono ovovivipari. Tuttavia, il metodo di accoppiamento dei goodeidi è un po' diverso da pesci più comuni, come guppy e portaspada. Piuttosto che un gonopodio, i maschi goodeidi trasmettono sperma alle femmine utilizzando un andropodio, una pinna anale dentellata.
Pochi sono i goodeidi famosi in acquariofilia: fa eccezione Xenotoca eiseni, che è il Goodeide d'acquario più comune.
Attualmente ci sono tre specie riconosciute in questo genere[1]:
Xenotoca è un genere di pesci d'acqua dolce appartenenti alla famiglia Goodeidae ed alla sottofamiglia Goodeinae.
Xenotoca is een geslacht van straalvinnige vissen uit de familie van de levendbarende tandkarpers (Goodeidae).
Xenotoca is een geslacht van straalvinnige vissen uit de familie van de levendbarende tandkarpers (Goodeidae).
Xenotoca er en gruppe splittfinner. Det er små fisk som lever i ferskvann og finnes i sentrale høyland i Mexico.
Navnet kommer av gresk xenos, «fremmed» og tokos, «fødsel».
Denne iktyologirelaterte artikkelen er foreløpig kort eller mangelfull, og du kan hjelpe Wikipedia ved å utvide den.
Xenotoca er en gruppe splittfinner. Det er små fisk som lever i ferskvann og finnes i sentrale høyland i Mexico.
Navnet kommer av gresk xenos, «fremmed» og tokos, «fødsel».
Multimedia w Wikimedia Commons Xenotoca – rodzaj ryb karpieńcokształtnych z rodziny żyworódkowatych (Goodeidae).
Gatunki zaliczane do tego rodzaju [2]:
Xenotoca – rodzaj ryb karpieńcokształtnych z rodziny żyworódkowatych (Goodeidae).
