In the first study of its kind, researchers at the University of Pittsburgh have determined that healthy young adults ages 18-25 can improve their working memory even further by increasing their Omega-3 fatty acid intake with fish oil supplements.

FORBES: New Study Shows that Omega-3 Supplements Can Boost Memory in Young Adults

Most big studies confirming the cardiovascular benefits of omega-3s have tested either docosahexaenoic acid (DHA), an omega-3 found in salmon, sardines and breast milk, or another fish oil called eicosapentaenoic acid (EPA).

FORBES: Snake Oil in Your Snacks

Docosahexaenoic acid (DHA) from fish oil protects the heart and may even help brain development .

FORBES: Magazine Article

Another key point: Vascepa contains purified ethyl EPA, an omega-3 fatty acid, but does not contain significant amounts of docosahexaenoic acid, or DHA, another omega-3 fatty acid that is a major component of non-prescription fish-oil pills, as well as Lovaza.

FORBES: For Amarin And Its Fish Oil Pill, Another FDA Delay

The marinade tames the ocean out of anchovies and sardines, and its acid firms the flesh, nullifying slimy characteristics, making it a perfect choice for the fish-phobic.

WSJ: Escabeche: A Seafood Dish for the Fish-Phobe

The acid from the lime, lemon or orange juice changes the structure of the proteins in the fish much in the same way that heat does. (If you make it at home, you can observe the flesh turning from translucent to opaque.) Therein lay my answer.

NPR: Cool and Comforting Ceviche