Betta Thin And Not Eating

[CasaDilla]

Hi, one of my female bettas is not eating. She's thin, so I don't think it's constipation. It's not dropsy, either. My male betta from a separate tank recently had popeye, but got better with medication. I'm just worried whatever he was infected with the girls somehow got from some water getting in their tank from his quarantine tank? I don't know if this would spread it or not, just a theory, correct me if I'm wrong. The water is at safe levels, the only thing different is that the tank is at 72 degrees instead of the normal 76 because of fall coming. Anyway, does anyone have any idea what could be wrong?

 

[jasminekiddell]

Well Firstly,
How big is the tank?
What fish and how many fish does it have?
Is it heavily planted?
Do you have a fitler, if so what filter?
Also what do you feed?

 

[pippoodle]

what colour is her poop ?
you need to keep her temp - min 24 degrees else can be detrimental to their health - their digestive system slows and they are more prone to diseases - get a heater for the tank or keep it in a warmer room