Related Clues:

• Octa- halved
• Opening for four?
• Neon ___ (fish)
• Chloride lead-in
• Neon swimmer
• Neon aquarium fish
• 104 Down prefix
• ''Four'' at the fore
• Bright aquarium fish
• Aquarium brightener
• Four: Pref.
• It can add color to the tank
• Bright swimmer
• Eye-catching swimmer
• Prefix meaning "four"