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''Serrasalmus geryi'' (violet line piranha or Gery's piranha) is a species of fish found in the lower Tocantins and Araguaia Rivers of Brazil. This rare ''Serrasalmus'' is the one piranha of the genus ''Serrasalmus'' that can coexist with others of the same species (though caution is advised). Gery's Piranha reaches sizes up to 12 inches in length. ==Morphology (Body Characteristics)== Body shape is similar to other compressus group members and are very laterally compressed such as; S. altuvei, S. hastatus, S. compressus and S. altispinis. The fish is distinctive at all ages with its broad stripe running from lower mouth to top of beginning of dorsal fin. Color: Silvery bodied fish with numerous small spots on the flanks. Anal fin is hyaline with a broad black margin. Pectoral and ventral fins are clear. A humeral spot may be present. Eyes silvery to reddish-orange. A quick visual reference to identify this fish: * Reddish-orange eyes * Violet line running from the lower jaw, over the back until the base of the tail fin * Concave head shape Maximum Size: Approx. 25 cm. (10") TL. Specimens over 20 cm. (8") TL are quite rare in captivity. Sexing: Not sexually dimorphic: males and females look similar. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Serrasalmus geryi」の詳細全文を読む スポンサード リンク
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