so when i order tuna in a sushi restaurant, what am i actually getting? does this apply to dark red tuna as well as the lighter varieties? on a similar subjec

so when i order tuna in a sushi restaurant, what am i actually getting? does this apply to dark red tuna as well as the lighter varieties? on a similar subject, this is an excellent (and depressing) fresh air episode: http://www.npr.org/2010/07/19/128512740/paul-greenberg-the-future-of-wild-fish http://www.npr.org/2010/07/19/128512740/paul-greenberg-the-f...