Imparfinis

Imparfinis is a genus of three-barbeled catfishes native to South America, with a single species (I. lineatus) in Central America.

Species
There are currently 23 recognized species in this genus:
 * Imparfinis borodini Mees & Cala, 1989
 * Imparfinis cochabambae (Fowler, 1940)
 * Imparfinis guttatus (N. E. Pearson, 1924)
 * Imparfinis hasemani Steindachner, 1915
 * Imparfinis hollandi Haseman, 1911
 * Imparfinis lineatus (W. A. Bussing, 1970)
 * Imparfinis longicaudus (Boulenger, 1887)
 * Imparfinis microps C. H. Eigenmann & Fisher, 1916
 * Imparfinis minutus (Lütken, 1874)
 * Imparfinis mirini Haseman, 1911
 * Imparfinis mishky Almirón, Casciotta, Bechara, Ruiz Díaz, Bruno, D'Ambrosio, Solimano & Soneiro, 2007
 * Imparfinis munduruku Castro & Wosiacki, 2019
 * Imparfinis nemacheir (C. H. Eigenmann & Fisher, 1916)
 * Imparfinis parvus (Boulenger, 1898)
 * Imparfinis pijpersi (Hoedeman, 1961)
 * Imparfinis piperatus C. H. Eigenmann & A. A. Norris, 1900
 * Imparfinis pristos Mees & Cala, 1989
 * Imparfinis pseudonemacheir Mees & Cala, 1989
 * Imparfinis schubarti (A. L. Gomes, 1956)
 * Imparfinis spurrellii (Regan, 1913)
 * Imparfinis stictonotus (Fowler, 1940)
 * Imparfinis timana Ortega-Lara, Milani, DoNascimiento, Villa-Navarro & Maldenado-Ocampo, 2011
 * Imparfinis usmai Ortega-Lara, Milani, DoNascimiento, Villa-Navarro & Maldenado-Ocampo, 2011