Possible Clues:

• Cold rice topped with wasabi and raw fish
• Sushi bite sometimes served on a model boat
• See 50-Down
• Sushi bite that's raw fish atop hand-pressed rice
• Sushi that isn't rolled
• Type of sushi whose name translates to "two fingers"
• Sushi variety
• Unrolled sushi bar offering
• Non-rolled sushi dish
• Ball of vinegared rice topped with raw fish