Scenery on the Edge of Barito River

This is the scenery on the banks of the broad Barito River. Houses are visible on the banks of the river from a distance and looks very crowded. This suggests to us that the Barito River was settled many residents. Barito River is classified as a wide river in its banks inhabited by the community. Less clear is where the community of the river banks originally from because we did not go down to the ground and asked them where they came from. Are they native tribes of Banjar, ethnic Javanese, or Dayak tribe? Or maybe they are the Bugis tribe of southern Sulawesi?