I noticed late last night that my molly had developed a white vent, then she started darting around looking very distressed. It was very worryin g. She is acting ok now, but still has the white part. I read somewhere about hexamita, could it be this? Her poo has been white and stringy, but I thought it was just her type of fish (i am new to the hobby). She is also looking a bit fatter recently and going down to rest on the bottom out of sight, I actually thought she was pregnant. Please help! Also, If anyone knows of a good product to get rid, which I can get in the uk, that would be great.