clunkster
Fish Crazy
if you say there is nothing showing on the fish then you must have water quality issues ie a toxin in your water that unless you send a sample of water to a lab you wont know if i was you i would do a water change and use a gravel vac if you have one if not it might be a good idea to get one as gravel can contain some nasties & keep an eye on your fish
its not good practice to add any medications on the hope it might help as you should only add a medication when needed & then only to treat a specific diseasehmmm....well you must have some sort of infection or disease in your tank, get some medicine, QUICK! i had a betta for months, one day it just died! day after that a fish kept copping it