Possible Clues:

• Small fish
• Minnow
• That's just a little fishy
• Small fry
• Tiny member of the school
• Mostly merry monarch? There’s a slight catch
• A little bleak?
• It's a little fishy for the TD to get be such an idler
• Little fish: young child has swapped ring for one
• Lad heartlessly tried afresh, but only caught this