''Aequidens'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...
of
fish
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% ...
in the
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
Cichlidae
Cichlids are fish from the family Cichlidae in the order Cichliformes. Cichlids were traditionally classed in a suborder, the Labroidei, along with the wrasses ( Labridae), in the order Perciformes, but molecular studies have contradicted th ...
found in
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the souther ...
. Formerly a
wastebasket genus, as presently defined ''Aequidens'' is largely restricted to the
Amazon Basin
The Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries of Boli ...
,
Orinoco Basin and river basins in
The Guianas
The Guianas, sometimes called by the Spanish loan-word ''Guayanas'' (''Las Guayanas''), is a region in north-eastern South America which includes the following three territories:
* French Guiana, an overseas department and region of France ...
. The only exceptions are ''A. plagiozonatus'' which also occurs in the
Paraná Basin
The Paraná Basin ( pt, Bacia do Paraná, es, Cuenca del Paraná) is a large cratonic sedimentary basin situated in the central-eastern part of South America. About 75% of its areal distribution occurs in Brazil, from Mato Grosso to Rio Grande ...
, and ''A. tetramerus'' which also occurs in the
Parnaíba River
The Parnaíba River ( pt, Rio Parnaíba) is a river in Brazil, which forms the border between the states of Maranhão and Piauí. Its main course is long and the Parnaíba River Basin covers .Ramos, T.P.A.; Ramos, R.T.C.; and Ramos, S.A.Q.A. (2 ...
.
Taxonomy
Many species formerly placed in this genus have been reallocated to other
genera
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial ...
such as ''
Andinoacara'', ''
Bujurquina'', ''
Cleithracara'', ''
Krobia'', ''
Laetacara
''Laetacara'' is a small genus of cichlids native to freshwater habitats in tropical and subtropical South America, ranging from the upper Orinoco River basin in Venezuela to the Paraná River basin Argentina.Linke H, Staeck L (1994) ''American ...
'', ''
Rondonacara'' and ''
Tahuantinsuyoa''.
[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.'']
Species
There are currently 17 recognized species in this genus:
[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.''[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.''
* ''
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
''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 ...
''
( Heckel, 1840) (Doublespot acara)
* ''
Aequidens paloemeuensis
''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 ...
''
S. O. Kullander & Nijssen Nijssen is a Dutch patronymic surname originating from the given name "Denijs" (DenisPeople with this surname include:
;
;Nijssen
* Han Nijssen (1935–2013), Dutch ichthyologist
* Sjir Nijssen (born 1938), Dutch computer scientist known for Nij ...
, 1989
* ''
Aequidens patricki
''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 ...
''
S. O. Kullander, 1984
* ''
Aequidens plagiozonatus
''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 ...
''
S. O. Kullander, 1984
* ''
Aequidens potaroensis
''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 ...
''
C. H. Eigenmann, 1912
* ''
Aequidens rondoni
''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 ...
''
( A. Miranda-Ribeiro, 1918)
* ''
Aequidens superomaculatum
''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 ...
''
Hernández-Acevedo, Machado-Allison & Lasso A., 2015[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.''
* ''
Aequidens tetramerus
The saddle cichlid (''Aequidens tetramerus'') is a species of cichlid from the Tribe (biology), tribe Cichlasomatini, part of the subfamily Cichlasomatinae from South America. It is the type species of the genus ''Aequidens''. It is reasonably com ...
''
( Heckel, 1840) (Saddle cichlid)
* ''
Aequidens tubicen
''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 ...
''
S. O. Kullander & E. J. G. Ferreira, 1991
* ''
Aequidens viridis
''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 ...
''
( Heckel, 1840)
References
Cichlasomatini
Freshwater fish genera
Taxa named by Carl H. Eigenmann
Taxa named by William L. Bray
{{Cichlidae-stub