Tararira ñata (Hoplerythrinus unitaeniatus)
Adult found dead during a flooding.
Collected in the bay of the river Paraguay, Pantanal of Mato Grosso - Brazil.
Coletado em baía do rio Paraguai, pantanal do Mato Grosso - Brasil.
Small pond on each side of the road. There were more water when I visited the place than you can see on google map now (2013).
The Erythrinidae are a family of freshwater fish found in rivers from Costa Rica south as far as Argentina. They are common and are usually caught with hooks by fishermen, partially because of their voracious behaviour. They are sometimes called trahiras.