Help me with my Blue Tang!!!

[rapalaboy1999]

My Blue Tang has a blue tumor like growth on its right fin I dont know what it is, the tang is 2 years old and ive never had a problem with it, please help!!!!

 

[rapalaboy1999]

Help me with my blue tang!

Ive had my blue tang for 2 years now and he has a blue growth on his right fin, I dont know if its safe for him, he eats normally and doesnt hide very much, please help!