P. nigricans
Introduction '''P. nigricans''' may refer to:* ''Padogobius nigricans'', the Arno goby, a fish species of fish endemic to Italy* ''Pardirallus nigricans'', the blackish rail, a bird species found in Argentina, Bolivia, Brazil, Colombia, Ecuador, Paraguay, Peru and Venezuela* ''Phaonia nigricans'', Johannsen, 1916, a fly species in the genus ''Phaonia''* ''Pollimyrus nigricans'', the dark stonebasher, a fish species found in Burundi, Kenya, Tanzania and Uganda* ''Ponthieva nigricans'', Schltr., 1917, an orchid species in the genus ''Ponthieva'' found in Ecuador* ''Prochilodus nigricans'', the black prochilodus, a tropical South American freshwater fish species found in the Amazon and Tocantins River basins* ''Pycnonotus nigricans'', the black-fronted bulbul, a songbird species found in Angola, Botswana, Lesotho, Namibia, South Africa, Eswatini, Zambia and Zimbabwe* ''Pyrorchis nigricans'', red beaks, or elephants' ears, an orchid species found in Australia
Synonyms * ''Planorbis nigricans'', a synonym for ''Biomphalaria glabrata'', a snail species
See also * Nigricans (disambiguation)