Possible Clues:

• It's more then a bit fishy to have 17 across in here, one swears
• We may tour river on a ship for fish
• That's fishy sort of wear about the saints
• Swimmer swears violently
• Aquarium fish that sleeps in sand
• Brilliantly colored marine fish
• The two of us saving money after chopping head off fish
• Fish regularly found in warm stormy seas
• Swimmer with idiot on banks
• Fish with idiot on banks