Dwarf fish like Guppies and Danios, Corydora catfish, pigmy suckermouths, teams of barbs or tetras Should you are interested in retaining magnificent and interesting fish, then the very best groups of fish to keep are tropical fish. The most popular freshwater sharks are rainbow sharks, bala sharks, and pink-tail sharks. https://pearlaquatics.my/4-tips-for-buying-a-fish-tank/