Related Clues:

• Lunch fish
• Fish that's high on the food chain
• Melt ingredient, often
• With 35 Across, sandwich stuff
• Sushi serving
• Salade niçoise ingredient
• Source of omega-3
• Bluefin, for one
• Sushi-bar selection
• Chicken of the Sea, e.g.
• Certain steak source
• Warm-blooded food fish
• Large game fish
• Toro, in sushi bars
• Base for some casseroles