Related Clues:

• Sushi servings, perhaps
• Shocking swimmer
• Wrigglers
• Wriggling fish
• Underwater power source?
• They're trapped in pots
• River lurker
• Often-smoked fish
• Crabber's bait
• Unagi, at sushi bars
• Certain wiggly electric fish
• Slippery varmints
• Fish with charges
• Slithery sea creature
• Japanese menu item