Caecorhamdia Norman, 1926 Pimelenotus Gill, 1858 Pteronotus Swainson, 1839 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.

[1] 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.

[1][2] In a few of these only some of their populations are troglobitic.

[1][2] There are currently 26 recognized species in this genus: