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Characodon lateralis GÜNTHER, 1866

Rainbow Characodon

March 13th, 2012 — 1:19pm

Restricted to a series of small habitats below the waterfall known as ‘El Salto’ in the upper Río Mezquital basin, Durango state, central Mexico. It was previously considered to occur throughout much of the upper Río Mezquital in both Durango and Coahuila states, but genetic analyses suggest otherwise and have resulted in taxonomic confusion (see ‘Notes’).

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Ameca splendens MILLER & FITZSIMONS, 1971

Butterfly Goodeid

March 13th, 2012 — 1:19pm

Despite often being referred to as extinct in the wild this monotypic species is still surviving at a few localities. It's not particularly scarce in the hobby with strong captive populations existing, some of which have been selectively bred to produce variations in colour and patterning.

As with other goodeids, there is less of a size difference between the sexes than in many other livebearers. This is thought to be related to the relatively primitive…

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