Agata Valentina or Eataly - sushi quality seafood?
Eataly has outstanding, often wild, seafood. Some good local choices too. Not sure if they would be a source for sushi though since it seems like seafood for sushi requires different considerations/preparation and be best sourced at a more sushi-minded market like Mitsuwa or H-mart in NJ... It's worth asking at Eataly though since their quality is so consistently high.