Possible Clues:

• Bird only grabbing tail of saltwater fish
• Perform poem about old lake fish
• Lots of deliveries coming in benefit Channel swimmer
• Swimmer in port alone
• Daughter having no more, only fish
• Port only provides fish
• Fish commonly served a la Meuniere
• Fish lovers do upset me, ultimately
• Flatfish named for an English port
• Do get the priest back with the only thing that's flat