Related Clues:

• Microscopic organism of single cell that changes shape constantly
• A small fish - bad one
• Organism with single cell changing constantly
• Tiny organism consisting of single changing cell
• Water protozoa
• Water protozoan
• One-celled creature found in water
• Apply light touches of colour to the fish
• Constantly-changing one-celled creatures
• No moron, by the sound of it, could take it in
• As a doctor, little backward Abraham is not in any sort of shape
• Up to no good, and that's flat
• It's no good coming back with this, and that's flat
• The fish may turn stinking, and that's flat!
• In Rome I love to get Abraham up in such a primitive way