I have three in my 20 gallon planted tank with cherry barbs, Colombian tetras, assorted guppies, sparkling gouramis, porthole catfish, whiptail catfish, and a couple others. I typically only see one of them at a time but they hang out in the same spot every day, so if you're able to find them it's pretty cool. I don't mind not seeing them all the time because I have so many other fish so it's really cool when I actually do see them.