H. nigricans
Introduction '''H. nigricans''' may refer to:* ''Haplochromis nigricans'', Boulenger, 1906, a fish species in the genus ''Haplochromis''* ''Heliotropium nigricans'', a plant species endemic to Yemen* ''Hexatoma nigricans'', Edwards, 1927, a crane fly species in the genus ''Hexatoma''* ''Hirundo nigricans'', the tree martin, a bird species found in Australia* ''Hypoplectrus nigricans'', a hamlet fish from the Western Atlantic* ''Hypentelium nigricans'', the northern hogsucker, a sucker fish species found in the rivers of the Mississippi basin from Oklahoma and Alabama northward to Minnesota
Synonyms * ''Hypostomus nigricans'', a synonym for ''Parancistrus aurantiacus'', a catfish species
See also * Nigricans (disambiguation)