Does anyone else have corys (peppered) who swim all over the tank? I have 5 in my 20g and they’re swimming up and down the walls, back and forth through the middle of the tank, and just generally all over. They’re healthy and are also doing their thing along the bottom of the tank sifting through the sand looking for food, but I just have never had corys swim all over the tank like this. Maybe they’re just happy? Haha. Thanks!