裸顶脂鲤，为辐鳍鱼纲脂鲤目脂鲤科的其中一个种。

本鱼分布于南美洲巴拉圭、玻利维亚、巴西、阿根廷的溪流中。

The black tetra (Gymnocorymbus ternetzi) also known as the black skirt tetra, petticoat tetra, high-fin black skirt tetra, and black widow tetra, is a freshwater fish of the characin family (Characidae). It is native to the Paraguay and Guaporé River basins of southern Brazil, Argentina, and Bolivia.