This is one shy fish. You will not see it. This isn't a bad thing, just don't get worried if you don't see them for a few days. They also are a tenacious little guy. They are hardy and great at cleaning up a tank. Back in the day, I had an undergravel filter. I do not know how these little guys did it, but they managed to get under the undergravel filter. I found this out while disassembling the tank. They had survived me shutting down the tank and removing everything. They were healthy, but I fear they might have actually been surviving down there for quite some time....no idea how.