Extension of the distributional range of the silver porgy, Diplodus argenteus (Valenciennes 1830), and the red porgy, Pagrus pagrus (Linnaeus 1758) (Sparidae) in northern Patagonia, south-western Atlantic.

Examines the extension of the distributional range of the silver porgy, Diplodus argenteus, and the red porgy, Pagrus pagrus in northern Patagonia in the southwestern Atlantic. Species richness of the fish assemblage that inhabits nearshore rocky reefs in northern Patagonian gulfs; Components of the fish from different biogeographic provinces; Area map showing locations where sparids were caught during spearfishing tournaments.