YT wound?

[Dail14]

Originally Posted by Casey

Looks a little like a lamprey bite, too oval though. Cut that piece out and throw it away. Cook the fish it should be fine.

that was my first thought too. It's too square to be one and looks far too big as well but that could be just how the picture portrays it. We do have them here but I would expect the yellowtail to eat the lamprey once it spots it. It could be an old wound from an escaped gaff. So long as the gaff does not Peirce any major organs I would think most fish if they were healthy to begin with could survive.