I am brand new to this site and also to having an aquarium. We set up our aquarium 10 days ago and bought our fish today. We have 2 peppered catfish and 2 wagtail platys. I wish I had found this site before buying our fish because I am just realising there is so much to learn. Anyway one of our catfish has been going to the top of the tank and just laying there kind of floating. I don't know if this is normal or not. If anyone has an answer to this could you please help me and let me know.