Paraneetroplus is a genus of cichlid fish native to moderately to fast-flowing waters in the Coatzacoalcos, Grijalva and Papaloapan river basins in southern Mexico.[1] They reach up to 20–25.5 cm (8–10 in) in length.[2]
Historically, Paraneetroplus was included in the genus Cichlasoma (which is distantly related) and then in Theraps (which is relatively closely related). Once Paraneetroplus was recognized as its own genus, the members of Maskaheros and Vieja often were included within it. Today these are generally recognized as three separate but very closely related genera.[1][3]