How to Heal a Fish With Fin Damage

A common cause of fin damage in fish is fin rot. Fin rot is an aquarium fish disease that causes white spots on the fin and tails of the fish. The fins begin to look more ragged as the disease progresses. It can eventually eat all of the fin membrane away, leaving just the fin rays. Fin rot is a bacterial infection that is usually caused by poor tank conditions, and it mostly affects fish with a weakened immune system. Fin rot damage can be healed with a few simple steps.

Things You'll Need

  • New water
  • Extra/hospital tank
  • Extra filter
  • Antibiotics
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Instructions

  1. Fixing the Environment

    • 1

      Change 20 to 50 percent of the water with clean water. Check the tank for ammonia, nitrite, nitrate, pH and temperature. Make sure the ammonia and nitrite levels are at 0 ppm and nitrate should be under 20 ppm. The pH levels and water temperature should remain stable from day to day.

    • 2

      Clean debris out of the tank. Clean all of the filters and gravel in the tank.

    • 3

      Remove tank bullies. Bullies nip at the other fish, causing fin damage that can lead to fin rot.

    Antibiotic Treatment

    • 4

      Remove the affected fish from the community tank. Place the fish in another tank, sometimes referred to as a hospital tank.

    • 5

      Add over-the-counter antibiotics to the tank water. The antibiotic should be gram negative. Some antibiotics used to treat fin rot are minocycline and kanamiacyn.

    • 6

      Observe the fish for signs of further infection. Check to see if the fish is healing properly and if the fin tissue is growing back.

    • 7

      Remove the fish from the hospital tank and return it to the home tank. Do this when all signs of infection are gone and the fin tissue has grown back.