Related Clues:

• Lamprey or conger, e.g.
• Grownup elver
• Long-bodied swimmer
• This may shock you
• Swimmer with a current
• Lamprey
• Grown elver
• Finless fish
• Japanese food fish
• Slithery creature
• Jellied fish
• It's long and slippery, and may shock you
• Shocking swimmer
• Wriggling fish
• Underwater power source?