Related Clues:

• ''O --- Mio''
• Cod's showcase neighbor, perhaps
• Angler's prize
• Seafood choice
• Pump part
• One and only
• Lake dweller
• Shoe part that's wiped on 23-Down
• It's under a foot
• A fish out of school?
• Lone
• Steelhead or squaretail
• Oxford foundation
• Lemon ___
• It's under foot