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Superregnum : Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Euteleosteomorpha
Subcohors: Neoteleostei
Infracohors: Eurypterygia
Sectio: Ctenosquamata
Subsectio: Acanthomorphata
Divisio/Superordo: Acanthopterygii
Subdivisio: Percomorphaceae
Series: Ovalentaria
Superordo: Cichlomorphae
Ordo: Cichliformes

Familia: Cichlidae
Subfamilia: Cichlinae
Genus: Aequidens
Species: A. chimantanus – A. diadema – A. epae – A. gerciliae – A. mauesanus – A. metae – A. michaeli – A. pallidus – A. paloemeuensis – A. patricki – A. plagiozonatus – A. potaroensis – A. rondoni – A. superomaculatum – A. tetramerus – A. tubicen – A. viridis

Aequidens Eigenmann & Bray, 1894

Type species: A. tetramerus

Eigenmann, C.H. & Bray, W.L. 1894. A revision of the American Cichlidae. Annals of the New York Academy of Sciences 7(4): 607–624. BHL Reference page.


Aequidens and its species (including synonyms) in Catalog of Fishes, Eschmeyer, W.N., Fricke, R. & van der Laan, R. (eds.) 2021. Catalog of Fishes electronic version.
Aequidens species list in FishBase,
Froese, R. & Pauly, D. (eds.) 2021. FishBase. World Wide Web electronic publication,, version 02/2021.

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.[1]

Many species formerly placed in this genus have been reallocated to other genera such as Andinoacara, Bujurquina, Cleithracara, Krobia, Laetacara, Rondonacara and Tahuantinsuyoa.[2]

There are currently 17 recognized species in this genus:[3][4][5][6]

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[7]
Aequidens tetramerus (Heckel, 1840) (Saddle cichlid)
Aequidens tubicen S. O. Kullander & E. J. G. Ferreira, 1991
Aequidens viridis (Heckel, 1840)


Froese, Rainer and Pauly, Daniel, eds. (2016). Species of Aequidens in FishBase. October 2016 version.
Ottoni, F.P. & Mattos, J.L.O. (2015): Phylogenetic position and re-description of the endangered cichlid Nannacara hoehnei, and description of a new genus from Brazilian Cerrado (Teleostei, Cichlidae, Cichlasomatini). Vertebrate Zoology, 65 (1): 65-79.
Musilová, Z., Říčan, O. & Novák, J. (2009):Phylogeny of the Neotropical cichlid fish tribe Cichlasomatini (Teleostei: Cichlidae) based on morphological and molecular data, with the description of a new genus. Journal of Zoological Systematics and Evolutionary Research, 47 (3): 209-304.
Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Aequidens". Catalog of Fishes. California Academy of Sciences. Retrieved 7 November 2018.
Froese, Rainer and Pauly, Daniel, eds. (2018). Species of Aequidens in FishBase. June 2018 version.
Wijkmark, N., Kullander, S.O. & Barriga S., R.E. (2012): Andinoacara blombergi, a new species from the río Esmeraldas basin in Ecuador and a review of A. rivulatus (Teleostei: Cichlidae). Ichthyological Exploration of Freshwaters, 23 (2): 117-137.
Hernández-Acevedo, J.H., Machado-Allison, A. & Lasso, C.A. (2015): Aequidens superomaculatum (Teleostei: Cichlidae) a new species from the upper Orinoco and Río Negro, Venezuela. Biota Colombiana, 16 (2): 96-106.

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