If Fin rot that caused by fungus we can take care of a goldfish in a way, first catch the fish, and dab malachite green directly on the fungus with a Q-tip. This is extremely effective. Repeat treatments may be necessary.
If Fin rot that caused by bacterial infected, we can use antibiotic to treat the fish. Antibiotic treatment in a quarantine tank. This is doesn't always work and make stressful for the fish. If the goldfish is still eating, the best bet is an antibiotic food. Tetra makes one that works well, just buy the one for bacterial diseases and follow the directions on the label
If Fin rot that caused by bacterial infected, we can use antibiotic to treat the fish. Antibiotic treatment in a quarantine tank. This is doesn't always work and make stressful for the fish. If the goldfish is still eating, the best bet is an antibiotic food. Tetra makes one that works well, just buy the one for bacterial diseases and follow the directions on the label
