Brachyrhaphis Regan
Brachyrhaphis Regan, 1913: 997 .
Type species: Gambusia rhabdophora Regan, 1908 . Type by monotypy. Gender: feminine.
Trigonophallus Hubbs, 1926: 48 . Type species: Trigonophallus punctifer Hubbs, 1926 . Type by original designation. Gender: masculine.
Plectrophallus Fowler, 1932: 384 . Proposed as new subgenus of Panamichthys Hubbs. Type species: Panamichthys tristani Fowler, 1932 . Type by original designation. Gender: masculine.
Composition. Brachyrhaphis cascajalensis (Meek & Hildebrand), B. episcopi (Steindachner), B. hartwegi Rosen & Bailey, B. hessfeldi Meyer & Etzel, B. holdridgei Bussing, B. parismina (Meek), B. punctifer (Hubbs), B. rhabdophora (Regan), B. roseni Bussing, B. roswithae Meyer & Etzel, B. terrabensis (Regan) .
Distribution. Mexico (southern Pacific drainages), Costa Rica (Pacific and Atlantic drainages), Guatemala, Panama (central and western).