Agriculture stuffs

As we all know, the conventional way to get fish is by fishing, get fish from ocean, lake, river, shore, and sea.

But as world population increased, thus the food supply must increase to feed the growing population. Moreover fish is important source for protein.

Thus the development of agriculture which is new and innovative way of breeding fish in a closed area of particular hydro-habitat.
It is like a chicken-farm, but its a fish-farm, where the fish is breed in a closed area in water.

This brand new way would enable fasten the growth of fish and the cultivation of algae which can help to feed other living-being the habitat.