Related Clues:

• Cylinder
• Metamorphosing fish
• Slippery sorts
• Winning streak
• Make into a ball
• Adult grigs
• Snaky swimmer
• Get moving
• Lengthy lurkers of the deep
• Hot-dog holder
• Coral reef dwellers
• Sea slitherers
• Bioelectric fish, sometimes
• Anguilliform creatures
• It was 'boil'd in broo',' in the ballad 'Lord Randal'