It has to be; fish from the lake is much tastier than fish from the farms/ponds. I guess the lake ones are exposed to a variety of foodstuffs and nutrients that a fish farmer cannot provide. plus the space within the lake is much larger, making them swim more and grow healthier (and heavier). This is just a hypothesis; on the taste though l am sure. You can straight away tell the difference. Nearest comparison l can think of is like kienyeji chicken vis-a-vis broilers!