Hello, I have looked through the emergencies and diseases page and cannot find a similar problem, I know that I have caused this problem as I have had a baby and neglected my water changes. I am taking that all in hand now to lower my nitrates and get things back on track. Now down to the problem. It started with one of my fish getting a small clear lump on the lip and a small white worm? started to grow in it, it then emerged cleanly from the fish, about 1cm long, never to be seen again, then 2 of my fish had 2 lumps each with them same problem. Non of the fish have died and appear unharmed but obviously I need to get things sorted. I have not introduced any new fish or plants I just wish to find out if anyone knows what these worms are and if medication is needed. Thankyou for your time.