My female betta has something weird going on in the gills in the area under her chin, it looks like it's all swollen and infected with something. She hasn't been eating much, swimming real slowly, and hiding a lot. She also seems pretty lethargic to me- though I could be wrong, all I know is Wesley is way more active than her, but I have next to no experience with females... She was a 'community betta' for a while, but since I inherited her she's got her own heated 5g and it's only since the switch I've seen her gills puff up, just a couple of days ago. I'd been keeping her water clean with water changes (were going to be bi-weekly but she hasn't even been in there a week!) but since I saw she was sick I put my spare AquaClear on her tank (don't know if it's a 10 or a 20, I've adjusted the flow down a bit). Did a 30% water change yesterday, and today I've given her a diluted dose of Melafix and I'm going to do another water change later.