I have them in a 20 gal tall heavily planted community tank with presssurized CO2. She is definitely the queen of the waters. They aren't shy and get along with everything in there. My tank is way overstocked but I am religious about water changes and only use RO water and all of my fish seem to be thriving. Her colors didn't get vibrant until after about 3 weeks and only eats live black worms or snail eggs she finds in the tank.