Barramundi Grouper; Cromileptes altivelis

We had photographed the rare Barramundi or Humpback Grouper only once up until 2020, on a diving trip to Koh Tao as I remember. We have also seen them a few times at local dive sites but now we’ve photographed them on a couple more occasions at Sail Rock – it would be great to see them re-establish here…
Note the totally distinctive hump-backed shape; we’re not sure why they have evolved that way!