Traditionally known as the fishnet people which land boundaries are the whole of Roma, south to St George, west to Muckadilla, north near Injune and east to Jackson.
- The homelands to Resistance Warrior Bussamarai who lead the land war in 1842 – 1852.
- Strong cultural presence with dancing, art and traditional hunting.
- Towns like Wallumbilla meaning “Home of the Jew Fish”, Yuleba “Home of the Water Lillies” and Muckadilla “Muddy Water”.
Mandandanji people have long been recognised as the main language group of the Roma area. The region also has several neighbouring groups, some of these regional groups have similar or related languages. There is diversity across some of the languages in the South West. Tindale claimed that Mandandanji territory covered an area of approximately 40,000km2 and included the Maranoa and Balonne rivers north of St. George and the areas around Mitchell, Roma and Surat. It extended west as far as Bollon and Wallam Creek to the north to Donnybrook, Orallo, Yuleba and the Great Dividing Range and east to Alton and Glenmorgan. Tindale concluded that shortly after European settlement, the Mandandanji subsumed the Gunggari, the group situated to the west of the Mandandanji, and that in later descriptions, the two groups were not distinguished. The northern Mandandanji who were located on the headwaters of Coogoon Creek were known as the Kogai Clan the fish net people.