Glossogobius Gill 1860

1. Head pores completely absent........................................................................................ 2 (Glossogobius flavipinnis complex)

– Head pores present, at least in interorbital region................. 3

2. Second dorsal rays usually I,9; anal rays usually I,8; confined to Lake Mahalona.... Glossogobius mahalonensis new species

– Second dorsal rays I,8; anal rays I,7; confined to Lake Towuti................................................ Glossogobius flavipinnis

3. Anal rays usually I,9; body compressed and deep, body with numerous pupil sized or smaller spots on midsides; Lakes Towuti and Mahalona.......... Glossogobius intermedius

– Anal rays normally I,8, body rounded and slender, body uniformly coloured, with faint stripes or a few large dark spots usually greater than eye size...................................................................................... Glossogobius matanensis complex