Carlana eigenmanni is a species of characin found in Costa Rica, Nicaragua and Panama.
The Carlana eigenmanni is the only member of its genus. The average length of the Carlana eigenmanni as an unsexed male is about 5.4 centimeters or about 2 inches long. 
The Carlana eigenmanni is recorded to be found in freshwater environments in Central America in places such as the Pacific and Atlantic drainages from Nicaragua to Panama. This species specifically lives close to the shoreline, river backwaters, and motionless region of habitats. They can be found near vegetation. They feed mainly on algae and sometimes on aquatic insects.