Sushiholic - In the 1820's Hanaya Yohei of Edo (Tokyo) brought to Edoites a recipe most similar to what we are served today. His morsels, which included Sashimi (fresh sliced raw fish)
Puffer Fish Sushi & Sashimi. by Daniel Food Diary
Sushi Gastronomy: My Best 10 sushi (and extras!) in Shizuoka in 2012! - SHIZUOKA GOURMETS
Kawahagi & Shirako Nigiri - Picture of Sushi Bar Maumi, Vancouver - Tripadvisor
Last supper? Japan's diners divided over killer puffer fish | Japan | The Guardian