First, post in Tropical Emergency - this section is for saying hi, etc. and a lot of people don't monitor it.
Second, please add the following information otherwise no one will be able to help:
1. Water parameters. (ammonia, nitrate, nitrite, PH, temp', Hardness etc)
2. A full description of the fishes symptoms.
3. How often you do water changes and how much.
4. Any chemicals and treatments you add to the water.
5. What tank mates are in the tank.
6. Tank size.
7. Finally Have you recently added any new fish?
With this information you are likely to get some assistance.
