The correct answer is: a) Freshwater fish.
Rivers and reservoirs in Tamil Nadu support a variety of freshwater fish species, including carp, catfish, and tilapia. These fish are an important part of the local ecosystem and provide a valuable source of food for humans.
Saltwater fish are not found in rivers and reservoirs in Tamil Nadu, as they require a higher salinity level than freshwater fish. Ornamental fish are also not found in rivers and reservoirs, as they are typically kept in aquariums or ponds. Fish farming is not a major industry in Tamil Nadu, although there are some small-scale operations.
Here is a brief description of each option:
- Freshwater fish: Fish that live in freshwater, such as rivers, lakes, and ponds.
- Saltwater fish: Fish that live in saltwater, such as oceans and seas.
- Ornamental fish: Fish that are kept for their beauty, such as goldfish and koi.
- Fish farming: The practice of raising fish for food or other purposes.