Dwarf fish for instance Guppies and Danios, Corydora catfish, pigmy suckermouths, groups of barbs or tetras Most Central and South American cichlids can be saved with many different aquarium crops, but African species are more difficult to pair as a result of drinking water parameters. It isn't unattainable although! See https://pearlaquatics.my/product/discus-color-blue/