Related Clues:

• Thin projection for fish to steer itself
• A fish uses it to steer itself
• Swimmer's flipper
• At last I have four of them in there
• C of this for the fish for those who are late
• Sound for before this
• 11 down has it's forte in it
• 1/4?
• Grief stage count, according to Kübler-Ross
• Almost half a dozen
• Late afternoon hour
• Bill with a marten
• Popular shift ender
• Aquatic appendage
• See 9