I need some help on a matter

[Angel Lady]

they are about 7 weeks old and I was watching them they seem to be fickering against the rocks and things in the tank. And I have lost five of them already thier bellys get flat and it takes them three days to die do you all think it could be a Internal parasite that is the only thing I could come up with I have searched the web for answers and I have bought 15 different books and I cant come up with anything else. What do you guys think.

 

[Pufferpack]

I'm not sure with fry, but could they need a little salt in the water?...What kind of fry are they?

 

[Redbled]

Seems from when I've had fry that most of them always die. Seems you're doing well if 15-20 survive to me.

 

[bigfish]

sounds like they are suffering from gill worm, treatments are available at your local petshop but i wouldnt recommend the full dose i would half it as they so small and delicate, ask william for more advice on this topic.