Animal Diversity

Step 1: Understand marine fish.
Marine fish live in saltwater habitats like oceans and seas.
Step 2: Review the options.
- Catla is a freshwater fish found in rivers and lakes.
- Mangur (Mrigal) is also a freshwater fish.
- Hilsa is a marine fish found in coastal waters and is well-known for its presence in the Bay of Bengal.
- Singhi is a freshwater fish found in rivers.
Step 3: Conclude.
Hilsa is a marine fish, making option (C) the correct answer.
Final Answer: