''Biotoecus'' is a fish
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of
cichlid
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 this ...
s from northern
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 southe ...
where one species ''(B. dicentrarchus)'' is found in the
Orinoco Basin and the other ''(B. opercularis)'' occurs in the northern part of 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 Bolivi ...
. These small cichlids do not surpass in length.
Species
The two recognized species in this genus are:
* ''
Biotoecus dicentrarchus''
S. O. Kullander, 1989
* ''
Biotoecus opercularis''
(Steindachner
Franz Steindachner (11 November 1834 in Vienna – 10 December 1919 in Vienna) was an Austrian zoologist, ichthyologist, and herpetologist. He published over 200 papers on fishes and over 50 papers on reptiles and amphibians. Steindachner describ ...
, 1875)
References
*
Geophagini
Cichlid genera
Taxa named by Carl H. Eigenmann
{{Cichlidae-stub