3 ms·Tuna are also predators. And high in mercury. Not a co-incidence.by SideburnsOfDoom 1y agoTuna are also predators. And high in mercury. Not a co-incidence.IAmBroom 1y agoNearly all fish are. And, come to think of it, no one seems to like eating any fish liver.wil421 1y agoAnkimo, monkfish liver at sushi places, is great but I suggest you get it from someone who knows how to prepare it otherwise it can be off putting.