Related Clues:

• Fore for four?
• Tank stock, perhaps
• Common aquarium fish
• Tank swimmer
• 'Neon' fish
• One more than tri-
• Half of octa-
• Cousin of quadri-
• Aquarium beauty
• Octa- halved
• Opening for four?
• Neon ___ (fish)
• Colorful swimmers
• Chloride lead-in
• Neon swimmer