Related Clues:

• Pack-'em-in children's game
• Ones sitting tight?
• Tightly packed fish
• Game fish
• Fish in a can
• Tom treat
• Cramped locale
• Ones closely packed in
• Canned fish
• Analogy for rush-hour riders
• They're crammed in cans
• Fish in a crowded-subway metaphor
• Fish in cans
• Cramped spot, slangily
• Aridness of small fish