Herichthys is a genus of cichlid fishes native to North and Central America. Most are endemic to Mexico, but H. cyanoguttatus is also found in southern Texas (United States), and has been introduced to central Texas and Florida.
In 2015, the genus was split in two, and seven species (H. bartoni, H. labridens, H. molango, H. pame, H. pantostictus, H. pratinus, and H. steindachneri) were moved into a new genus, Nosferatu. The validity of the move and newly-erected genus was widely disputed by other icthyologists in the field; consequently, the split was undone, and Nosferatu is no longer recognized as a valid genus by FishBase and Eschmeyer's Catalog of Fishes.
, 14 species are recognized as valid by FishBase:
Eschmeyer's Catalog of Fishes only recognizes 11 species in Herichthys as valid, and considers the following species to be synonymous with other Herichthys species: