If it is hemorrhagic septicemia virus , antibiotics will only treat the bacteria based secondary infections, not the virus itself.
Not sure about mycobacteriosis aka fish TB, you would need to confirm this via smear sample. A vet that specializes in fish would be your best bet.
Not sure about mycobacteriosis aka fish TB, you would need to confirm this via smear sample. A vet that specializes in fish would be your best bet.