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Vieja maculicauda

Vieja is a genus of fish from the family Cichlidae. The geographic distribution of the genus is limited to Central America, primarily Mexico,Guatemala and Nicaragua. In general Vieja are high bodied cichlids which grow to between 15-35 cm (6 - 13.8 inches). There are 16 species of Vieja currently described. The classification of several species of Vieja are in dispute, several are sometimes listed as part of the genus Theraps. Further investigation including dna studies is expected to clarify the taxonomy over the next few years.


source : Wikipedia