The past coupel of days, my blue betta's been kind of droopy. I knwo it's not water quality, because I keep his water fine, and he hasn't been exposed to any other fish, water from other tanks, etc. to pick up any parasites or what have you.
Also, he's all but lost his color on his body. He's gone from beautiful blue to brown. It's not like it's something that's covering his body either, it's his body itself that's changed colors.
I'm wondering if maybe it's just old age? I have no idea hwo old he was when I got him, but I've had him for several months now and I know that Bettas don't live as long.
He still eats ok and swims around some, but isn't as active. Also, he hasn't built a bubble nest in a few weeks now, and he used to build them all the time.