How active are your axolotls? I've only had mine for a couple weeks now, but he's SUPER active. He's hardly ever sitting still, always rooting around in the rocks and swimming up and down the sides of his tank! Is this normal? He gets really pink with all the activity, but I'm pretty sure it's not stress, as he goes back to his normal white colour when he's sleeping. Maybe it's because he's still young? I'm not sure of the age, but he's only about 5 inches right now, from nose to tip of his tail. Anyway, I was just curious... how active are your axolotls?