How do you treat a fish injured from jumping out of a tank? It has blood stained tail and sore red skin.
Injured fish is generally needed to be taken good care of. Incase the fish is wounded then you first need to find the reason, if it is due to the environment, or is it due to the other fishes around. If it is due to any of these reasons then try and keep it in a separate bowl. Once you have placed the fish in a separate bowl incase the tissues are damaged then I am sorry your fish will not live for long and incase it will not then it will definitely heal on its own. But I am still uncertain about this you can try and visit this website and see if it could of any help to you.