In a river of eastern Brazil, an “armored” creature swam along searching for the next meal to sink its “copper colored” teeth ...

This article addresses central themes in the study of tropical biodiversity, exploring the roles that speciation, extinction, and dispersal play in the formation of regional assemblages.

"Some species of Characidium are almost identical ... Underestimated diversity in Characidium (Characiformes: Crenuchidae) ...

Passing scientists looked at their blotchy catch — and discovered a new species. Researchers visited several rivers in Minas ...