توضیحات:

Freshwater fish farming is now increasingly tempting. Although currently more fish consumption is supplied by marine fish, in 2018 freshwater fish production will overtake capture fisheries production from the sea.

Why is that, because capture fisheries production from the sea will decline due to overfishing. Fish in the sea are increasingly difficult to obtain. Even if there is no change in the production model, the researchers predicted that by 2048 there would be no more fish to catch.

Therefore, it is necessary to increase the production of freshwater fish as a substitute for marine fish and our opportunity to cultivate freshwater fish so that we can provide space for marine biota to breed,
and benefit from the cultivation of freshwater fish.

So this brief explanation may be useful for you, thank you.