I have two male bettas (Kept in seperate tanks fo course) and one is healthly, and I've had that one for a year and a half. The toher one I've had for a year and he's always been sluggish, hanging out at the bottom of his tank. I have one of those tansk that hangs on the wall from Petco. I KNOW it's not healthly, but my mom and dad won't let me get another tank to replace it. Does anyone know whats wrong with him? Please help! Thanks!
(Please don't yell at me abotu the tank, I can't change it.)
The other male is kept in a 1.5 gallon tank.