Yes, there is a nice fish restaurant in Boca Chica, called Neptunes. You can eat nice seafood everyware in SD, also at the Malicon, the boulevard were you stay.
well, Hans you have to tell me where you can find a good seafood restaurant in the malecon. I had never seen any.
Most spanish restaurants has good seafood in town. close to Jaragua you can try Reina de Espa?a and Cantabrico. both have fresh seafood. El Bucanero in san souci is also a good choice.
Neptuno is good, but avoid their shrimps. they 're always overcooked. Lobster and Red snapers are their best.
if you plan to go a little further you can find the best fresh seafood in the country. Deli Swiss in Juan Dolio.