My betta fish seems to have been looking a bit bigger in the ventral/ pectoral fin region almost bloated? Is this a serious issue? From time to time she will breath like those bigger fish (opens and closes it's mouth like it's gulping water) sometimes small bubbles come out. I also saw this small speck.. that was squirming! It was floating in my aquarium and it looks like a worm? Is it a parasite... Can it be affecting my fish?