Nothonotus is a genus or subgenus of darters endemic to the southeastern United States. First proposed as a sub-genus of Etheostoma in 1988, there is still debate regarding the appropriate taxonomic rank of Nothonotus in the literature . Darter species comprise more than 180 of the Percidae taxa. Four genera are consistently recognized by ichthyologists within the family Percidae: Etheostoma,Crystallaria, Ammocrypta, and Percina.