{"id":866,"date":"2019-06-20T15:34:36","date_gmt":"2019-06-20T15:34:36","guid":{"rendered":"http:\/\/www.britishlivebearerassociation.co.uk\/site\/?p=866"},"modified":"2022-05-08T12:37:28","modified_gmt":"2022-05-08T12:37:28","slug":"xiphophorus-nezahualcoyotl-rauchenberger-kallman-morizot-1990","status":"publish","type":"post","link":"https:\/\/www.britishlivebearerassociation.co.uk\/site\/2019\/06\/20\/xiphophorus-nezahualcoyotl-rauchenberger-kallman-morizot-1990\/","title":{"rendered":"Xiphophorus nezahualcoyotl (Rauchenberger, Kallman & Morizot 1990)"},"content":{"rendered":"\n

Etymology:<\/strong><\/p>\n\n\n\n

Xiphophorus:<\/em> Greek,\nxiphos = sword + Greek, pherein = to carry<\/p>\n\n\n\n

Nezahualcoyotl<\/em>: Named after the poet-philosopher emperor of Tezcoco (Texcoco),\nconsidered to be coequal with Montezuma, monarch of the Aztecs in the Aztec\nTriple Alliance<\/p>\n\n\n\n

First\ndescription:<\/strong><\/p>\n\n\n\n

Rauchenberger,\nKallman & Morizot 1990<\/p>\n\n\n\n

Rauchenberger,\nM., K. D. Kallman, AND D. C. Morizot (1990) Monophyly and geography of the Rio\nPanuco basin swordtails (genus Xiphophorus) with descriptions of four new\nspecies. American Museum Novitates 2975, 1\u201341.<\/p>\n\n\n\n

Common\nName:<\/strong><\/p>\n\n\n\n

Northern Mountain Swordtail<\/p>\n\n\n\n

Affectionately known as Nezzie<\/p>\n\n\n\n

Synonyms:<\/strong><\/p>\n\n\n\n

Xiphophorus montezumae montezumae: Rosen,\n1960:<\/p>\n\n\n\n

Xiphophorus montezumae ((Hamburg, 1964)):\nLechner and Radda, 1987:<\/p>\n\n\n\n

Xiphophorus, sp. nov.: Zimmerer and\nKallman, 1988:<\/p>\n\n\n\n

History:<\/strong><\/p>\n\n\n\n

Collected\nby K. D. Kallman, D. C. Morizot, and M. Ryan on 6th<\/sup> April 1985.<\/p>\n\n\n\n

X.\nnezahualcoyotl has previously been confused as X. montezumae, some if not all\nprevious reports in the past to experimental work with X. montezumae actually\nrefer to X. nezahualcoyotl.<\/p>\n\n\n\n

Group:<\/strong><\/p>\n\n\n\n

Xiphophorus nezahualcoyotl<\/em> <\/em>is one of nine\nnorthern swordtails and belongs to the Montezumae clade consisting of consisting of X. montezumae, X.\nnezahualcoyotl, X. continens<\/em><\/p>\n\n\n\n

Type\nLocality:<\/strong><\/p>\n\n\n\n

Arroyo Gallitos, 0.5 km west of Gallitos,\nan internal drainage, Tamaulipas state, Mexico.<\/p>\n\n\n\n

Distribution:<\/strong><\/p>\n\n\n\n

Rio Tamesi drainage, San Luis Potosi\/Tamaulipas\nstates, Mexico<\/p>\n\n\n\n

Populations:<\/strong><\/p>\n\n\n\n

El Salto, Mexico<\/p>\n\n\n\n

Puente el Nacimiento<\/p>\n\n\n\n

Rio Tamesi Ocampo<\/p>\n\n\n\n

Habitat:<\/strong><\/p>\n\n\n\n

Generally found in streams with strong\ncurrents over substrates of sand, gravel or rocks (Very rarely over mud or\nclay) with usually sparse or no vegetation. <\/p>\n\n\n\n

Size:<\/strong><\/p>\n\n\n\n

Male 5cm female 6cm<\/p>\n\n\n\n

Distinguishing\ncharacteristics:<\/strong><\/p>\n\n\n\n

A\ndeep bodied medium sized species of swordtail.<\/strong><\/p>\n\n\n\n

Colour\/Pattern\nVariability:<\/strong><\/p>\n\n\n\n

Males<\/strong><\/p>\n\n\n\n

A base\ncolour of pale brown, overlaid with a sky blue the lateral line is formed of\nmultiple zigzag lateral lines. Black spots can appear on the body, these can\nform random patterns which are not identical to both sides.<\/p>\n\n\n\n

The\ndorsal fin base is long and when the dorsal fin is lowered it extends further\nback along the caudal peduncle<\/p>\n\n\n\n

The caudal peduncle is relatively deep\nwith many populations showing a caudal blotch. The sword is yellow with black\nedging and distinctly upturned (although fairly straight in larger males),\nsword length is on average just over half the length of the body.<\/p>\n\n\n\n

Females<\/strong><\/p>\n\n\n\n

A\nbase colour of pale brown, overlaid with a sky blue the lateral line is formed\nof multiple zigzag lateral lines. Black spots can appear on the body, these can\nform random patterns which are not identical to both sides.<\/p>\n\n\n\n

Husbandry:<\/strong><\/p>\n\n\n\n

Can be kept in a biotope aquarium with a\ngravel and rock base using a power filter to provide the current or a planted\ncommunity aquarium for similar sized fish<\/p>\n\n\n\n

X. nezahaulcoyotl is found at lower\nelevations than X. montezumae and therefore requires a slightly higher\ntemperature, Derek Lambert recommended 25 degrees<\/p>\n\n\n\n

Breeding:<\/strong><\/p>\n\n\n\n

If well fed and maintained in an aquarium\nwith plenty of hiding places, this species can be flock-bred, however it is recommended\nto remove the female to a heavily planted spawning tank about a week before\nbirth.<\/p>\n\n\n\n

Broods are produced on a monthly cycle with\nfry numbers of 25 on average.<\/p>\n\n\n\n

Remarks:<\/strong><\/p>\n\n\n\n

A\nsister species to Xiphophorus montezumae, Identifiable by having a smaller adult\nsize with a deeper body, a shorter sword that is distinctly upturned.<\/p>\n\n\n\n

References:<\/strong><\/p>\n\n\n\n

Rauchenberger, Kallman & Morizot: <\/strong>Monophyly and Geography of the Rio Panuco Basin\nSwordtails (Genus Xiphophorus) with Descriptions of Four New Species <\/p>\n\n\n\n

Derek\nand Pat Lambert: <\/strong>Platies and swordtails<\/p>\n","protected":false},"excerpt":{"rendered":"

Etymology: Xiphophorus: Greek, xiphos = sword + Greek, pherein = to carry Nezahualcoyotl: Named after the poet-philosopher emperor of Tezcoco (Texcoco), considered to be coequal with Montezuma, monarch of the Aztecs in the Aztec Triple...<\/p>\n","protected":false},"author":59,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-866","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.britishlivebearerassociation.co.uk\/site\/wp-json\/wp\/v2\/posts\/866","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britishlivebearerassociation.co.uk\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.britishlivebearerassociation.co.uk\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.britishlivebearerassociation.co.uk\/site\/wp-json\/wp\/v2\/users\/59"}],"replies":[{"embeddable":true,"href":"https:\/\/www.britishlivebearerassociation.co.uk\/site\/wp-json\/wp\/v2\/comments?post=866"}],"version-history":[{"count":1,"href":"https:\/\/www.britishlivebearerassociation.co.uk\/site\/wp-json\/wp\/v2\/posts\/866\/revisions"}],"predecessor-version":[{"id":867,"href":"https:\/\/www.britishlivebearerassociation.co.uk\/site\/wp-json\/wp\/v2\/posts\/866\/revisions\/867"}],"wp:attachment":[{"href":"https:\/\/www.britishlivebearerassociation.co.uk\/site\/wp-json\/wp\/v2\/media?parent=866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.britishlivebearerassociation.co.uk\/site\/wp-json\/wp\/v2\/categories?post=866"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.britishlivebearerassociation.co.uk\/site\/wp-json\/wp\/v2\/tags?post=866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}