Who Gives A Fish Forums

It's definitely smooth, and I can see why you'd think cyst, but to me it looks like a corydora egg - just a small, smooth white spot.

I've been keeping an eye on my beta and I just noticed a white spot on his dorsal fin - I'm pretty sure it's some kind of fungus, but I'm not entirely sure what's going on. He's been in his 10-gallon tank for a year now, and it's always been heated with a sponge filter. Recently I added some live ...