50697 Etheostoma burri Ceas & Page, 1997 Percidae Perches Etheostomatinae Perciformes/Percoidei Teleostei Brook Darter North America: Restricted to tributaries of the upper Black River system in Missouri from its headwaters in Reynolds and from countries to where the Black River flows into the Mississippi River alluvial plain near Poplar Bluff, Butler County.