Dwarf fish including Guppies and Danios, Corydora catfish, pigmy suckermouths, groups of barbs or tetras Most Central and South American cichlids is usually retained with a number of aquarium vegetation, but African species are more challenging to pair on account of water parameters. It's not extremely hard even though! Look https://pearlaquatics.my/ideas-for-fish-pond-refurbishment/