Rhamdia

Rhamdia is a genus of three-barbeled catfishes found in Mexico, Central and South America. These catfishes are nocturnal, opportunistic carnivores, found in a wide range of freshwater habitats. This genus includes a number of troglobitic members, encompassing a number of taxa, including R. enfurnada, R. guasarensis, R. laluchensis, R. laticauda, R. macuspanensis, R. quelen, R. reddelli and R. zongolicensis. In a few of these only some of their populations are troglobitic.

Species
There are currently 26 recognized species in this genus:
 * Rhamdia argentina (Humboldt, 1821)
 * Rhamdia branneri Haseman, 1911
 * Rhamdia cinerascens (Günther, 1860)
 * Rhamdia enfurnada Bichuette & Trajano, 2005
 * Rhamdia foina (J. P. Müller & Troschel, 1849)
 * Rhamdia guasarensis DoNascimiento, Provenzano & Lundberg, 2004
 * Rhamdia guatemalensis (Günther, 1864)
 * Rhamdia humilis (Günther, 1864)
 * Rhamdia itacaiunas Silfvergrip, 1996
 * Rhamdia jequitinhonha Silfvergrip, 1996
 * Rhamdia laluchensis A. Weber, Allegrucci & Sbordoni, 2003 (La Lucha blind catfish)
 * Rhamdia laticauda (Kner, 1858) (File-spine chulín)
 * Rhamdia laukidi Bleeker, 1858
 * Rhamdia macuspanensis A. Weber & Wilkens, 1998 (Olmec blind catfish)
 * Rhamdia muelleri (Günther, 1864)
 * Rhamdia nicaraguensis (Günther, 1864)
 * Rhamdia parryi C. H. Eigenmann & R. S. Eigenmann, 1888 (Tonala catfish)
 * Rhamdia poeyi C. H. Eigenmann & R. S. Eigenmann, 1888
 * Rhamdia quelen (Quoy & Gaimard, 1824) (Silver catfish)
 * Rhamdia reddelli R. R. Miller, 1984 (Blind-whiskered catfish)
 * Rhamdia saijaensis Rendahl (de), 1941
 * Rhamdia schomburgkii Bleeker, 1858
 * Rhamdia velifer (Humboldt, 1821)
 * Rhamdia voulezi Haseman, 1911
 * Rhamdia xetequepeque Silfvergrip, 1996
 * Rhamdia zongolicensis Wilkens, 1993 (Zongolica catfish)