Glass headstander

The glass headstander was first formally described in the 10th edition of Systema Naturae published in 1758 by Carl Linnaeus, with its type locality given as Suriname. The genus Charax is the type genus of the subfamily Characinae of the family Characidae. This family is classified within the suborder Characoidei of the order Characiformes. ==Etymology==

The glass headstander is the type species of the genus Charax. This name was first used as a non-binomial name in 1764 by Gronow for this species and is based on the Greek chárax, meaning a pointed stake in a palisade, an allusion to the densely packed sharp teeth of this species. The specific name, gibbosus, means "crooked" or "humpback", a reference to the protruding nape. ==Description==

The glass headstander has a maximum total length of and a maximum weight of . ==Distribution and habitat==

The glass headstander is found in South America in rivers in Guyana and Suriname, and in the upper Branco River in Brazil. This species occurs in tributaries. ==Diet==

The glass headstander feeds on other fishes, insects, crustaceans, bivalves and some plant matter. ==Conservation status==

The glass headstander has been assessed as Least Concern by the International Union for Conservation of Nature because it is relatively common across a rather wide range. However, some subpopulations may be adversely affected by mining activities. ==References==