Sorry that I post so much guys but I'm just really worried my axolotls aren't settling in. I've had my big axolotl for 2 weeks now and my little one I've picked up wednesday. But the big one has some of his gills pointing out, is this a sign of stress? If so what can I do to make him feel better? I do weekly water changes and my filter is on the low setting because the current can't be high.