Sardina pilchardus (Walbaum, 1792) were monthly sampled during May-October 2006 in the Gulf of Trieste (Northern Adriatic Sea) in order to estimate their energy density (ED ). A highly significant relationship between per cent dry weight (x) and ED (y)(J g-1 wet weight) was found: y=375.2x-4189.9 (n= 50 r2=0.97 p<0.001).
