Rhyacoglanis

Rhyacoglanis is a genus of catfishes (order Siluriformes) of the family Pseudopimelodidae.

Species
There are 9 species in the database, and the other 3 haven't been described, so they won't be included.
 * Rhyacoglanis pulcher (Boulenger, 1887)
 * Rhyacoglanis variolosus (Miranda Ribeiro, 1914)
 * Rhyacoglanis annulatus Shibatta & Vari, 2017
 * Rhyacoglanis epiblepsis Shibatta & Vari, 2017
 * Rhyacoglanis paranensis Shibatta & Vari, 2017
 * Rhyacoglanis seminiger Shibatta & Vari, 2017
 * Rhyacoglanis rapppydanielae Shibatta, Rocha & Oliveira, 2021
 * Rhyacoglanis beninei Crispim-Rodrigues, Silva, Shibatta, Kuranaka & Oliveira, 2023
 * Rhyacoglanis varii Shibatta & Souza-Shibatta, 2023

Identification
Rhyacoglanis is distinguished from other Pseudopimelodidae by three synapomorphies: the presence of a light blotch on the cheek; a connection between the middle of the dark caudal-fin stripe and the dark caudal-peduncle pigmentation; and 30–35 total vertebrae.

Distribution
Rhyacoglanis genus is widely distributed in the cis-Andean portions of South America, mainly in the Amazon, Orinoco, Paraná, Paraguay, and lower rio Tocantins basins.