[vintermann]

Eating predator livers is a bad idea in any case.

[SideburnsOfDoom]

Tuna are also predators. And high in mercury. Not a co-incidence.

[IAmBroom]

Nearly all fish are. And, come to think of it, no one seems to like eating any fish liver.

[wil421]

Ankimo, 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.