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Pygopristis denticulata
''Pygopristis denticulata'' is a species of serrasalmidae. It is a rare South American fish found in the Orinoco River basin, north and eastern Guiana Shield rivers, and tributaries of the lower Amazon River.〔 Specimens of this species is frequently found in acid clear or black waters. They usually feed on aquatic insects, small fish, and fruits.〔Machado-Allison, A. and W. Fink (1996). ''Los Peces Caribes de Venezuela. Diagnosis, claves, aspectos ecológicos y evolutivos''. Universidad Central de Venezuela, CDCV. (Colección Monografías), Caracas, ISBN 980-00-0967-1, 149p.〕 ''P. denticulata'' has pentacuspid teeth and a middle cusp that is usually only slightly larger than the other cusps. This is unlike the piranhas, which have tricuspid teeth with a larger middle cusp, making the teeth appear triangular. ''P. denticulata'' grows to about 20.0 cm (7.9 in) in TL. It has 62 chromosomes.〔 This fish possesses powerful dentition that can cause serious bites. It has scales.〔 ==References== 〔
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「Pygopristis denticulata」の詳細全文を読む
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