Hypomasticus

Hypomasticus is a genus of headstander native to tropical South America.

Species
There are currently 10 recognized species in this genus:
 * Hypomasticus copelandii (Steindachner, 1875)
 * Hypomasticus despaxi (Puyo, 1943)
 * Hypomasticus julii (dos Santos, Jégu & A. C. Lima, 1996)
 * Hypomasticus lineomaculatus Birindelli, L. A. W. Peixoto, Wosiacki & Britski, 2013
 * Hypomasticus megalepis (Günther, 1863)
 * Hypomasticus mormyrops (Steindachner, 1875)
 * Hypomasticus pachycheilus (Britski, 1976)
 * Hypomasticus santanai Birindelli & Melo, 2020
 * Hypomasticus steindachneri ( C. H. Eigenmann, 1907)
 * Hypomasticus thayeri (Borodin, 1929)