Just the Place you wanted, OP?
I just ran across a little place on the north side of 27. They have some frozen mero fillets, like everyone, but they also have fresh, clear eyed, red gilled fish in coolers under ice. I have not bought any of their fish yet, but when I run out of the dorado we caught last week, that is where we are going to get all our fish from now on....unless they really screw up somehow. They told me they will prep it any way I want; scaled with or without head, filleted, cut in wheels, etc.
The place is called Pescaderia Marino. It is almost impossible to see from 27. Phone number on their card is 809 227 1451. It is the next store past an auto accessory store, as you are heading out of town toward Fuerzas Armadas. If I remember right, it is a bit before you get to Nunez de Caceres.
They also had frozen lobster tails for RD450/pound.
I hope this helps. If these guys do well, we will have a good place to get fresh fish. The supermarkets try, but I almost always seem to have some kind of problem with them or their product.
Pedro Tercero