Some Of My Cpds Are Dyeing Help

Some of my CPDs are dyeing... I have had them for a week. They are not eating, getting really thin and hanging out at the top. My tank is 10 weeks old and cycled, planted and reading 0-0-5ppm, Ph 7. 25% water change with prime weekly. The guppied, neons, and shrimp are all fine. Grateful for any help. thanks

 

Could be parasites but need pics and aslo what does their poo look like

 

Have you tried feeding live foods?

 

I haven't got a look at their poo. The sick ones stay near the back of the tank. I have tried frozen foods also and the sick ones will not eat.
This evening I did a 50% water change, took out the carbon and treated with API General Cure, it covers a wide range of parasites.

Yes I have.

 

I wpuld qt them if possible so they dont infect your other fish if they havent already

 

Yes I have.

Since they have been in the tank for a week, I have decided to treat the whole tank, and my qt tank is already occupied. the other fish don't seem to be affected at all. I suspect it might be species specific because this is the second batch this has happened to. Thanks so much

 

I would qt them incase its something that is transmitted when other fish nibble on them after they have died and still treat the tank they where in.

 

Happy to report no new deaths and sick fish are showing slight improvement as they are more interested in food and nibbling at the food offered. I am still not able to qt the sick ones.