Hey all. As I've mentioned before I have nine female bettas in a 46gal bowfront tank. They were all doing really well until this morning. My crimson female is swimming on her side and acting kind of lethargic. She's usually one of the more fiesty of the females and will nip my finger if I put it in the water, but this morning she just struggled to swim up to the top to get some air, then drifted back down. She's also turned a very dark crimson, which usually she's more of a bronzish-red than pure red. The only thing even remotely different in the tank is that I floated one of my small males in the tank in an acrylic pet carrier (with a lid) because the water in his tank was too cold and I had no way to heat it, and he got out sometime during the night. All of the females are ignoring him completely, however, so I don't think that's it. Not sure what my levels are at (used to last of my test kit when I set up the tank and haven't had the money to go get another kit), but my water is crystal clear and I have a Penguin 170 filter running on the tank. Any thoughts would be immensely appreciated! Thanks!