Dwarf fish such as Guppies and Danios, Corydora catfish, pigmy suckermouths, teams of barbs or tetras Breeders managed to create the powdery blue shade that we are able to delight in. Remember that males usually get aggressive. The most popular freshwater sharks are rainbow sharks, bala sharks, and purple-tail sharks. https://pearlaquatics.my/8-fish-pond-maintenance-tips/