The other day I got several females, put them in a 5 gal, some gravel, a couple ornaments for hiding. They're all doing fine except one. She's lethargic. She sits on the bottom all the time and barely moves if one of the others swims up to her. She seems to struggle to make it to the surface, gets some air, and then goes back down. Does anyone have any idea what's up? I've already given her one salt bath, she's currently sitting in one. I've read I can give her five a day, which I'll probably start tomorrow, is there anything else I can try though?