Step 1: Understanding the Concept:
Crustaceans are highly diverse, spanning various orders that include crabs, lobsters, shrimps, and diverse micro-crustaceans.
Step 2: Detailed Explanation:
Let us analyze the matches:
- Mantis shrimps: Belong to the order Stomatopoda (Correct).
- Clam shrimps: Small branchiopod crustaceans belonging to the order Diplostraca (Correct).
- Fairy shrimps: Belong to the order Anostraca (not Euphausiacea, which is the order for krill). Thus, this is incorrectly matched.
- Tadpole shrimps: Primitive branchiopods belonging to the order Notostraca (Correct).
Step 3: Final Answer:
The incorrectly matched option is (C).