Sorry, I don't remember any of the strategies I used for the dragon-type feinds other than that dabilarho combo.

For the ghost fish, I used the flails. That "mash X as fast as you can" combo is pretty long and gives good coverage, so the fish would just fly into my combo and die. Didn't always work perfectly, but it's a heck of a lot better than using the sword.

Izanuma magic also worked well on them.