Possible Clues:

• Fish with garnet and glowlight varieties
• Swimmer regularly at sea (Torbay)
• Prefix meaning “four”
• A brightly coloured tropical freshwater fish, often kept in aquariums
• Colorful freshwater fish
• Fish touristy restaurants originally included in meal?
• Small school member
• Colorful aquarium denizen
• Prefix between tri- and penta-
• Fore four?