ummmm, this is a tricky one. Im no expert on fish... I am researching all oveer the internet trying to find an answer for you, but so far all i have is nothing. Best of luck to you and your fish
that he makes a fast recovery. Hope fully its just a bruise, but i will continue looking over the internet and through my moms vet books. But sooo far, theres not much in the books on fish
