Cyprinidae: Hasemania Nana Hemigrammus

Thursday 19 July 2012

Hasemania Nana Hemigrammus

Hasemania nana, most commonly known as the Silver Tipped Tetra, hails from Brazil. They are found in the blackwater creeks and whitewater streams in the Rio Francisco basin of eastern Brazil as well as the Rio Purus tributaries of western Brazil.

The Silver-Tipped Tetra, Hasemania nana, was originally described as Tetragonopterus nanus. It was later placed in the genus Hemigrammus. Still later it was described as Hasemania marginata, before finally being given the current classification of Hasemania nana. Some still list it in the sub-family Tetragonopterinae, however that is considered inaccurate and the genera for this species is currently under study. The lack of an adipose fin easily distinguishes Hasemania nana from other species in the Hyphessobrycon and Hemigrammus genera.