Glass Headstander Charax gibbosus

The Glass Headstander is so named as, like some others of its genus, it can be semi-translucent and often eats head downwards like the headstanders. Like other Charax, it is also called a Tetra and grows to 15cm long. It is native to the Orinoco basin and Guyana Shield. The male (above left) has a more pointed dorsal fin than the female (above right) - or is this just age-related. Another species in the same genus shares the name Glass Headstander, C. stenopterus, a similar semi-translucent fish native to Brazil. Paraguay and northern Argentina.