Gobiesox potamius Briggs 1955 . Pacific Riverine Clingfish, Smooth Clingfish; Chupapiedras, Chupapiedra Liso, Chupapiedra de Río del Pacífico, Guarasapo

Vouchers: Not available. Distribution: Eastern Pacific Ocean; from El Salvador to eastern Panama; entering estuaries and littoral lagoons and ascending river courses; (Nicaragua) PN and Ni (Pacific); 0–32 masl; Per, Dia, Amp. Occurrence and conservation status: Nat; LC (2020), population trend unknown. Literature: Bussing (1998: 249; brief description, including illustrations and an identification key, and information on distribution, with a map, and ecology) and Angulo (2021: 60; listed, including information on distribution).