Assuming that I have seen these fish at the market in Marigot, these would be local fish
There were many others available but not found in most restaurants

I try not to order any fish in a SXM restaurant that I can find at home and more "local"
Although I have enjoyed the the French mussels on Fridays, imported Dover sole and some wonderful scallops that Le Pressoir has imported from the Boston area
and are quite expensive for them to purchase