I don't think so, here is what a kingfish looks likeKingfish -- that's the same thing as California yellowtail, correct? World's finest gamefish in my book. Fight like an amberjack but much more challenging to find and catch, worm free and excellent on the grill. If you can get to them in a 15' skiff, even better. This one was in Baja California, Mex.
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Certainly very similar, we get them inshore as well certain times of year.Correct about the hamachi. That is in fact a California yellowtail in my pic. I lived in Southern California for years and wrote a book about fishing Baja.
And yes that's a kingfish/king mackerel.
But New Zealand (and I think southern Australia) has a nearly identical fish to the California yellowtail that they call kingfish, or southern kingfish, or yellowtail kingfish. Here's a link: https://www.megabitesfishing.co.nz/blog/556553
Edit: Apparently the southern hemisphere version is Seriola lalandi lalandi, and the northern hemisphere version is Seriola lalandi dorsalis. Whatever that means.