Parequula melbournensis, the silverbelly, Melbourne silver biddy or silver biddy, is a species of fish in the family Garreidae, the mojarras. It is the only member of the monotypic genus Parequula. It is native to the coastal waters of southern Australia at depths from 3 to 100 m (9.8 to 328.1 ft). This species can reach 22 cm (8.7 in) in total length.