Family Poeciliidae
Secondary
Heterandria anzuetoi Rosen & Bailey, 1979 (Chimbolo, Anzueto’s killifish)
Hydrographical zone: Río Lempa
Departments: Cabañas, Cuscatlán
Poecilia butleri Jordan, 1889 (Topote del Pacífico, Pacific molly) Hydrographical zone: Río Jiboa Department: La Paz
Poecilia gillii (Kner, 1863)
(Olomina, Gill’s molly)
Hydrographical zones: Río Lempa, Cara Sucia San Pedro Departments: Ahuachapán, La Libertad, San Salvador, La Paz, San Miguel, Morazán, Santa Ana
Poecilia marcellinoi Poeser, 1995
(Topote de Ilopango, Ilopango molly)
Hydrographical zones: Río Lempa, Grande de Sonsonate, Mandinga-Comalapa Departments: Sonsonate, La Libertad, Santa Ana
Poecilia salvatoris Regan, 1907
(Topote de El Salvador, Salvadoran molly)
Hydrographical zones: Río Lempa, Río Paz, Grande de Sonsonate Departments: Ahuachapán, Sonsonate, San Salvador, Santa Ana, Chalatenango
Poecilia sphenops Valenciennes, 1846
(Topote mexicano, Mexican Molly)
Hydrographical zones: Río Lempa, Río Paz, Mandinga-Comalapa, Río Grande de San Miguel Departments: Ahuachahapán, La Libertad, San Salvador, Usulután, San Miguel, Santa Ana, Cuscatlán Poeciliopsis pleurospilus (Günther, 1866)
(Guatopote manchote, Largespot livebearer)
Hydrographical zones: Río Lempa, Río Paz, Grande de Sonsonate, Mandinga-Comalapa, Río Jiboa, Río Grande de San Miguel, Lago Coatepeque
Departments: Ahuachapán, Sonsonate, La Libertad, San Salvador, La Paz, San Miguel, Morazán, Santa Ana, Chalatenango, Cuscatlán
Poeciliopsis turrubarensis (Meek, 1912)
(Guatopote del Pacífico, Barred livebearer) Hydrographical zones: Río Lempa, Bahía Jiquilisco Departments: San Vicente, Usulután
ORDER GASTEROSTEIFORMES
Family Syngnathidae Peripheral
Pseudophallus starksii (Jordan & Culver, 1895) (Pipeta/Falso Caballo, Yellowbelly pipefish)
Hydrographical zones: Mandinga-Comalapa, Sirama Departments: La Libertad, La Unión
ORDER SYNBRANCHIFORMES