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Xenotoca
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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 LermaGrande 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.[1] 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.[2] The Xenotoca species are small, reaching up to 9 cm (4 in) in standard length.[3]

Species

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X. doadrioi was only scientifically described in 2016 (it was formerly considerec a variant of X. eiseni). Like the other "redtails", only the male has a red-orange tail

There are currently five recognized species in this genus,[2][4] but two possibly undescribed species, tentatively referred to as Xenotoca cf. melanosoma and Xenotoca cf. variata, are known.[5][6]

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.[2]

References

  1. ^ "Xenotoca eiseni". SeriouslyFish. Retrieved 16 February 2016..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""'"'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
  2. ^ a b c Domínguez-Domínguez, O.; Bernal-Zuñiga, D.M.; Piller, K.R. (2016). "Two new species of the genus Xenotoca Hubbs and Turner, 1939 (Teleostei, Goodeidae) from central-western Mexico". Zootaxa. 4189 (1): 81–98. doi:10.11646/zootaxa.4189.1.3.
  3. ^ "Xenotoca variata". Goodeid Working Group. Retrieved 24 September 2018.
  4. ^ Froese, Rainer, and Daniel Pauly, eds. (2012). Species of Xenotoca in FishBase. August 2012 version.
  5. ^ ""Xenotoca" cf. melanosoma". Goodeid Working Group. Retrieved 24 September 2018.
  6. ^ ""Xenotoca" cf. variata". Goodeid Working Group. Retrieved 24 September 2018.


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Xenotoca: Brief Summary
provided by wikipedia EN

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 LermaGrande 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.

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visit source
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