Grammonus

Grammonus is a genus of viviparous brotula.

Species
There are currently 11 recognized species in this genus:
 * Grammonus ater (A. Risso, 1810)
 * Grammonus claudei (Torre y Huerta, 1930) (Reef-cave brotula)
 * Grammonus diagrammus (Heller & Snodgrass, 1903) (Purple brotula)
 * Grammonus longhursti (Cohen, 1964)
 * Grammonus minutus J. G. Nielsen & Prokofiev, 2010
 * Grammonus nagaredai J. E. Randall & Hughes, 2008
 * Grammonus opisthodon J. L. B. Smith, 1934 (Bighead brotula)
 * Grammonus robustus H. M. Smith & Radcliffe, 1913
 * Grammonus thielei J. G. Nielsen & Cohen, 2004
 * Grammonus waikiki (Cohen, 1964)
 * Grammonus yunokawai J. G. Nielsen, 2007