M. nigricans
# M. nigricans

M. nigricans may refer to:

* Makaira nigricans, the Atlantic blue marlin, a fish species endemic to the Atlantic Ocean
* Mantella nigricans, the Guibé's mantella, a frog species endemic to Madagascar
* Melanogaster nigricans, a hoverfly species in the genus Melanogaster
* Melinda nigricans, a fly species in the genus Melinda
* Micropterus salmoides, the largemouth bass, a fish species found in the United States of America
* Milax nigricans, Philippi, 1836, a land slug species in the genus Milax
* Molossus nigricans, a bat species in the genus Molossus
* Myotis nigricans, the black myotis, a bat species from South and Central America
* Mucuna nigricans, a plant species in the genus Mucuna
