sea catfish
The Ariidae or ariid catfish are a family of catfish that mainly live in marine waters with many freshwater and brackish water species. They are found worldwide in tropical to warm temperate zones. The family includes about 143 species.
Taxono ...
es. The three species in this genus exclusively inhabit
fresh water
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include ...
Guatemala
Guatemala ( ; ), officially the Republic of Guatemala ( es, República de Guatemala, links=no), is a country in Central America. It is bordered to the north and west by Mexico; to the northeast by Belize and the Caribbean; to the east by H ...
. The individual species have relatively small ranges. The highly endangered '' Paragenidens grandoculis'' of Brazil was long classified in ''Potamarius'', but a 2019 study has found it to belong in its own genus.
Species
There are currently three described species in this genus:
* ''
Potamarius izabalensis
''Potamarius izabalensis'' is a species of catfish in the family Ariidae. It was described by Carl Leavitt Hubbs and Robert Rush Miller in 1960, originally under the genus ''Arius''. It is known to inhabit Izabal Lake in Guatemala, and possibl ...
R. R. Miller
Robert Rush Miller (April 23, 1916 – February 10, 2003) "was an important figure in American ichthyology and conservation from 1940 to the 1990s."
He was born in Colorado Springs, earned his bachelor's degree at University of California, Berke ...