Dwarf fish which include Guppies and Danios, Corydora catfish, pigmy suckermouths, groups of barbs or tetras If all this hasn’t deterred you, then you ought to continue to keep some other things in mind prior to deciding to obtain a butterfly fish. It's because the black ghost knifefish is nocturnal https://pearlaquatics.my/4-questions-to-ask-while-interviewing-a-pond-cleaner/