Don't know.
I would give the wormer plus a try if you can't get a vet to percribe levaimsole.
It says it treats them the wormer plus but then again some products say they treat more than they actually do.
No its not free you will have to pay if he perscribes levaimsole.
Members have rang the vets and most of them have said they helped them out.
Yes a vet that treats animals.
No it won't kill the fish best to worm fish anyway.
Yes the worms should come out of the fish dead you will have to hoover them up.
Sorry read it wrong.
Don't know if it will kill all your fish to be honest.