[Jennifer Kronenberg]

I can’t speak for all of them, but my 6 are actually usually out where I can see them. A noise like a door shutting will startle them, but otherwise they are out in the open area of the tank. But, the tank has a lot of duckweed, so they may not feel like they are out in the open. The only time this has changed with mine is when I move them to a new tank. Then they hide for a week or so before they are back out.