
what do you feed them? Did you use dechlorinator in their water? Do they eat the food? Do they have any physical or Behavioral symtoms? Are your fish discolored? Try using stress coat and aquarium salt. They may be stressed.
Here is one physical symtoms that might be what your fish has:
emacitation, hollow belly, possibly sores/Tuberculosis/Hexamita
[/thanks for your help, went in to the lfs today and he said it might have had internal problems, dont know about the other one tho.