Aequidens is a genus of fish in the family Cichlidae found in South America. Formerly a wastebasket genus, as presently defined Aequidens is largely restricted to the Amazon Basin, Orinoco Basin and river basins in The Guianas. The only exceptions are A. plagiozonatus which also occurs in the Paraná Basin, and A. tetramerus which also occurs in the Parnaíba River. Taxonomy Many species formerly placed in this genus have been reallocated to other genera such as Andinoacara, Bujurquina, Cleithracara, Krobia, Laetacara, Rondonacara and Tahuantinsuyoa. Species There are currently 17 recognized species in this genus: Aequidens chimantanus Inger, 1956 Aequidens diadema (Heckel, 1840) Aequidens epae S. O. Kullander, 1995 Aequidens gerciliae S. O. Kullander, 1995 Aequidens mauesanus S. O. Kullander, 1997 Aequidens metae C. H. Eigenmann, 1922 Aequidens michaeli S. O. Kullander, 1995 Aequidens pallidus (Heckel, 1840) (Doublespot acara) Aequidens paloemeuensis S. O. Kullander & Nijssen, 1989 Aequidens patricki S. O. Kullander, 1984 Aequidens plagiozonatus S. O. Kullander, 1984 Aequidens potaroensis C. H. Eigenmann, 1912 Aequidens rondoni (A. Miranda-Ribeiro, 1918) Aequidens superomaculatum Hernández-Acevedo, Machado-Allison & Lasso A., 2015 Aequidens tetramerus (Heckel, 1840) (Saddle cichlid) Aequidens tubicen S. O. Kullander & E. J. G. Ferreira, 1991 Aequidens viridis (Heckel, 1840) References Cichlasomatini Freshwater fish genera Taxa named by Carl H. Eigenmann Taxa named by William L. Bray