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The current paper describes three, highly distinctive, new species of Glossogobius from southern New Guinea and northern Australia. The species differ from other species of Glossogobius in the combination of small size (maximum size to 50 mm SL), strong sexual dimorphism in mouth and fin sizes and reductions of nape scales and head pores in two of the species. The new taxa are known from small rivers and streams at elevations of less than 100 m. [ABSTRACT FROM AUTHOR]

A new species of the gobiid fish genus Glossogobius is described from Lake Mahalona and compared with a similar species, Glossogobius flavipinnis known only from Lake Towuti, Sulawesi in Indonesia. The new species is a dwarf species, lacking all head pores, a rare condition in the genus. The two Malili Lakes species treated here are allopatric and differ in several features, including colouration of the body and fins, markings on the head and body, fin-ray counts and degree of prolongation of the second dorsal spine in females. A diagnosis is provided for the genus and a full generic synonymy given including justification for the synonymy. Stupidogobius Aurich is regarded as a junior synonym of Glossogobius. A key is provided to the major species complexes of Glossogobius endemic to the Malili Lakes. Ecology and conservation of the two species are discussed. [ABSTRACT FROM AUTHOR]