No its a Micropeltes. You will notice the markings if you look very carefully, and the body shape makes it obvious. The bottom side of the micropeltes is more rounded that that of a straita, wheras a straita is flat (being that its more of a bottom dweller whereas the micropeltes is on the mid-range to top). Also a straita would be black on the top and white on the bottom.
And by the way, That fish is 18.5 kilos.