Inland fishing in Karnataka is predominantly carried out in:

Rivers
Reservoirs
Tanks
All of the above

The correct answer is D) All of the above.

Inland fishing in Karnataka is predominantly carried out in rivers, reservoirs, and tanks. Rivers are the most important source of inland fish in Karnataka, followed by reservoirs and tanks. The main species of fish caught in inland waters in Karnataka are carp, catfish, and tilapia.

Rivers are important for inland fishing because they provide a habitat for a variety of fish species. The rivers in Karnataka are also important for irrigation and drinking water. Reservoirs are also important for inland fishing because they provide a habitat for a variety of fish species. The reservoirs in Karnataka are also important for irrigation and drinking water. Tanks are also important for inland fishing because they provide a habitat for a variety of fish species. The tanks in Karnataka are also important for irrigation and drinking water.

Inland fishing is an important source of livelihood for many people in Karnataka. The fish caught in inland waters in Karnataka are used for food, as well as for export.