hey:
In my last two dives attan, his brother and me encountered 2 lion fish, here in the caribbean, in the Jungla beach at the south of PR. I killed both of them because recently in the news they said that this kind of fish is an invasive one, venemous, doesnt have competition, no animal can eat it and also eats gropuers, yellow snappers, and other fish we really want to hunt (their babies).
So my question is, Are we doing wrong by killing them? i really dont like killing fish that im not gonna eat or sell for surviving (paying debts) 
but we found them really close to the shore where families are swiming and enjoying the day, like 10 m from the shore at 7 feet under water, and also it was behaving like a sea urchin so it couldnt be seen.
I explain, it was in the sand, sorrounded by giant black sea urchins (i Like to appreciate nature also after fishing in my way back to shore and take close looks to every animal and seaweed I can) but couldnt help to notice a sea urchin that had wobbling spines, but pretty similar to the others. So I came closer and barely could see its eye, He changed color to a really black one, i just couldnt believe it, he surely was trying to pass by one of them!!!
Its a shame that such a beautifull fish had to be taken down, but i think it was the bestt thing to do. Also a friend of mine some months ago, found a rock fish near that beach, a pacific ocean specimen, also venemous. guys please take care where you put your hands and/or knees!!!