Possible Clues:

• Regularly stay by river and eat fish
• Fish I snared, all at sea
• Diners upset about a fish
• After the last of chips are almost finished, eat fish
• Below stairs, oddly, eat fish
• Fish typically preserved in olive oil
• Rinsed a (anag) — fish
• Rush-hour subway rider, figuratively
• Short way one fillets normal fish
• Irish race back first three characters from 25 across from point in the sea