Hi all, so I got this lovely male betta, and I'm toying with the idea of getting a 20 long and setting up a community tank. I showed him the mirror four times, twice yesterday and two times today, for a period of less than two minutes. The first time, he swam to the other side of the tank with his gills flared. The second time, he flared his gills then swam away to the other side of the tank, but he stopped once or twice while swimming away and spread his fins out more. He didn't come back for a few minutes and hid behind some plants. Today, he flared for less than three seconds and ran away, and I left the mirror instead of taking it away, and he wouldn't come within 6 inches of it but was watching it. The first time he flared a little while watching the mirror and the second he didn't. Does this mean being in a community tank would stress him out too much? He made no move to attack and was skittish for a little while after.... Are there any other tests that wouldn't potentially kill anything (even pest snails) or that wouldn't stress him? Thanks in advance!