Heptapteridae Gill, 1861
Imparfinis borodini Mees & Cala, 1989
Imparfinis cochabambae (Fowler, 1940)
Imparfinis guttatus (Pearson, 1924)
Imparfinis hasemani Steindachner, 1915
Imparfinis hollandi Haseman, 1911
Imparfinis lineatus (Bussing, 1970)
Imparfinis longicaudus (Boulenger, 1887)
Imparfinis microps Eigenmann & Fisher, 1916
Imparfinis minutus (Lütken, 1874)
Imparfinis mirini Haseman, 1911
Imparfinis mishky Almirón, Casciotta, Bechara, Ruíz Díaz, Bruno, DAmbrosio, Solimano & Soneira, 2007
Imparfinis nemacheir (Eigenmann & Fisher, 1916)
Imparfinis parvus (Boulenger, 1898)
Imparfinis pijpersi (Hoedeman, 1961)
Imparfinis piperatus Eigenmann & Norris, 1900
Imparfinis pristos Mees & Cala, 1989
Imparfinis pseudonemacheir Mees & Cala, 1989
Imparfinis schubarti (Gomes, 1956)
Imparfinis spurrellii (Regan, 1913)
Imparfinis stictonotus (Fowler, 1940)
Imparfinis timana Ortega-Lara, Milani, DoNascimiento, Villa-Navarro & Maldonado-Ocampo, 2011
Imparfinis usmai Ortega-Lara, Milani, DoNascimiento, Villa-Navarro & Maldonado-Ocampo, 2011
