The splitbanded goby (Gymneleotris seminuda) is a species of goby from the family Gobiidae which is native to the Pacific coast of the Americas from Baja California to Ecuador. This species can be found on rock or rubble reefs with growths of algae at a depth of from 1mto23mm (03feetto75feetm). This species grows to a length of 5cm (02inches) TL. This species is the only known member of its genus.