I havent spotted my female betta out and about for 2 days now and today I found her laying on her ground breathing with her mouth. I noticed that her colour is fading. She lives in a community tank with about 10 or so other fishes and gets along well with them. I changed 10% of the water 2 days ago too but she did start to lose her colour before that.
https://v.redd.it/usuuir9eoqtd1
Posted by JunksTea