I noted the last time I came down to cabarete that there were some fisherman going out early in the day and coming back around 2 or 3 in afternoon and selling their catch. also there were pictures I think posted by frank12 of guys selling fish along the beach. there is also place a few paces down from janets who sells fish you might try there . good luck
I would call the number Ringo posted and speak to Daniel. Thanks for the information.