Occurrence of the non-native sleeper Butis koilomatodon (Bleeker, 1849) (Perciformes: Eleotridae) in the Amazon coastal zone, Brazil

摘要

The eleotrid Butis koilomatodon (Bleeker, 1849) is native to estuarine waters of the Indo-Pacific Ocean, between China and Madagascar. This species has now been recorded at two sites on the Brazilian coastline (Espiríto Santo and Pará state) but so far there have been no published reports of this occurrence. The process through which the species was introduced into Brazil is unclear, although mechanisms such as the discharge of ballast water and biofouling are known to be important factors in the dispersal of marine organisms in Brazil.