How do you treat physical damage to your goldfish?

Answer 1

if your fish appears to be scratching itself against other objects, or keeping to the corner, chances are that is is infected with "ick." it is also known as Ichthyophthirius. another sign of ick is that small white specks are visible on the body of the fish. it can also be visible on the fins. since ick is a parasite, it is easily cured by ick treatment that can be found in pet stores. this is a fairly common situation.

Answer 2

This is going to depend on what might be causing the illness. Start by testing your tank water for ammonia, nitrites and nitrates, they should be 0, 0, and less than 10 respectively. If they are not, you should do a 50% to 75% water change on your tank making sure to match the temperature of the new water to the old water; add in the recommended dosage of water conditioner per the directions on the bottle.
Check for any sores, wounds or things like fungus to research possible diseases and treatments.

Answer 3

The best way to help a fish that has physical damage is with very clean water. Make sure that you are changing at least 50% of the water twice a week or more if needed, and add aquarium salt per the dosage on the container for your tank size to reduce stress.