A. nigricans
Introduction '''A. nigricans''' may refer to:* ''Acacia nigricans'', a wattle species endemic to an area on the south coast of Western Australia* ''Acanthurus nigricans'', a tang fish species from the Eastern Indian Ocean* ''Acronicta nigricans'', a moth species found in western China* ''Aspideretes nigricans'', the black soft-shelled turtle or Bostami turtle, a freshwater turtle species found in India and Bangladesh* ''Avrainvillea nigricans'', an algae species in the genus ''Avrainvillea''
Synonyms * ''Australorbis nigricans'', a synonym for ''Biomphalaria tenagophila'', an air-breathing freshwater snail species
See also * Nigricans (disambiguation)