Author: (Müller & Troschel, 1845)
Remark: See Géry (1977: 446) for identification key.
Comments: It is typical of rapidly flowing waters, in cascades and creeks with sandy-rocky bottoms, where it is very abundant.  Can also be found in calm waters.  It can escape its predators by effecting dramatic leaps out of the water.  It is a gregarious species which swims constantly near the surface of the water, on the look out for its food in the company of <i>Bryconops melanurus</i> (Ref. 12225).