I believe we must improve our human food supply by developing new and keeping older sources of food "the sea regions in which fish are abundant". Fish is one of the best foods for humans in many regards specially its easily digested protein. Since fish is used to feeding from organic sources, the wetland fish farming will do a good job to the ecosystem if it relies upon providing the fish with organic matters. However, the very composition of the fish required inorganic materials for its building but in less amounts in the edible "meaty" parts of the fish.