hey guys i need help to identify whats wrong with my koi, ive been away for one year traveling around the world and unfortuantely this is what i have come home too, the people that looked after it said its been there throughout the summer the fish feeds ok and seems to have no problems swimming even tho the growths are on its fins aswell. all the other fish appear to be healty its just seems to be this one.

any advice on what i should do would be great!

Have never seen something like that. Wonder if it is not the consequences of a physical injury?

yeah i cant find anything that sounds like it! the only way i could describe them is like warts or tumors? maybe... but if they was tumors i would of thought the fish would be acting strange but seems fine!