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Possibly a Freckled Grouper...
I don’t think so. Freckled grouper has rounded tail.
Typically they have yellow edged. But the fish on your picture doesn’t have it.
View attachment 626570
Yes, true. The Reef Fish book has a few examples that look like the fish in my video but the tail was rounded - otherwise unlike your examples both Starry and Freckled look similar in the book. This one has a Lyretail and white saddles - possibly a minor variation not documented.
So the only things we can be sure of are:
1. Its some kind of a Grouper - Most likely a Lyretail with color variation (your reference pic also has saddles)
2. its very tasty pan fried...