Dwarf fish for instance Guppies and Danios, Corydora catfish, pigmy suckermouths, groups of barbs or tetras Plecostomus catfish, or maybe plecos for short, are a big group of South American Catfish that dangle out on the bottom of lakes and rivers and graze on rocks and driftwood. Plecos are wonderful https://pearlaquatics.my/what-are-the-things-to-consider-when-buying-an-aquarium-for-your-office/