hello I have four male guppies that have been in Q together for little over a week. I want to make sure they are ok before going to the main tank. so....they have, for the most part, been hovering either in the bubbles from the air stone, near the filter, or near the bottom. they aren't very active swimmers....not like most fish i've personally seen or had. I just wonder if this is "normal" for guppies? thanks!