Retroculinae
Encyclopedia
Retroculus is a fish genus
from the cichlid family. It is the only member of the Retroculinae subfamily. Of the three described species, two are native to rivers in southeastern Amazon Basin
in Brazil
, while the final is native to rivers in Amapá
(Brazil) and French Guiana
. They are superficially similar to Geophagus
.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
from the cichlid family. It is the only member of the Retroculinae subfamily. Of the three described species, two are native to rivers in southeastern Amazon Basin
Amazon Basin
The Amazon Basin is the part of South America drained by the Amazon River and its tributaries that drains an area of about , or roughly 40 percent of South America. The basin is located in the countries of Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, and Venezuela...
in Brazil
Brazil
Brazil , officially the Federative Republic of Brazil , is the largest country in South America. It is the world's fifth largest country, both by geographical area and by population with over 192 million people...
, while the final is native to rivers in Amapá
Amapá
Amapá is one of the states of Brazil, located in the extreme north, bordering French Guiana and Suriname to the north. To the east is the Atlantic Ocean, and to the south and west is the Brazilian state of Pará. Perhaps one of the main features of the state is the River Oiapoque, as it was once...
(Brazil) and French Guiana
French Guiana
French Guiana is an overseas region of France, consisting of a single overseas department located on the northern Atlantic coast of South America. It has borders with two nations, Brazil to the east and south, and Suriname to the west...
. They are superficially similar to Geophagus
Geophagus
Geophagus is a genus of cichlids from South America. The genus is currently polyphyletic and in need of further taxonomic revision. Some geophagine cichlids previously included in this genus have been reallocated to Gymnogeophagus or Satanoperca...
.
Species
- Retroculus lapidifer
- Retroculus septentrionalis
- Retroculus xinguensis