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Texas cichlid
The Texas cichlid (''Herichthys cyanoguttatus'', formerly ''Cichlasoma cyanoguttatum'') is a freshwater fish of the cichlid family. This is the only cichlid species that is native to the lower United States. The fish, also known as Rio Grande cichlid, originated from the lower Rio Grande drainage in Texas near Brownsville and Northeastern Mexico.
''Herichthys cyanoguttatus'' can grow to be over thirteen inches and are differentiated by their distinctive characteristics and specific habitat needs. This breed of cichlid is known for its cream and turquoise spots.〔(【引用サイトリンク】url=http://www.tpwd.state.tx.us/huntwild/wild/species/cichlid/ )〕 Adult males also develop a nuchal hump on their head.〔 This cichlid also prefers the water temperature to be between 68 and 82 degrees and are negatively affected by rapid changes in temperature. Rapid increases and decreases in temperature can negatively affect the cichlid.
==Classification==
The Texas cichlid was originally part of the ''Cichlasoma'' genus until this group was restricted to South American cichlid species.〔 The fish is now a part of ''Herichthys'', which is defined as cichlids that "share a color pattern of short vertical bars and black spots posteriorly from the middle of the side, and a unique breeding color pattern in which the dorsal half of the entire head and anterior flank region turns a pale grayish color in contrast to black or dark gray adjacent areas, or the entire body turns pale."〔(Effects of interspecific competition, salinity, and hurricanes on the success of an invasive fish, the Rio Grande Cychlid (Herichthys cyanoguttatus) )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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