It is always good to include your graph together with the essay. Use the "Attach file(s)" feature for uploading the graph that helps us providing you with more meaningful feedbacks.
However, you follow an excellent structure for this task. :)
Overall, Asia achieved the largest number offishers fishes than other countriesregions in the world, and the top one exporter in the world come from Asia region.
.... comparison is not between countries, but regions of the world (Asia is a continent and not a country). The second part is not very clear :(
Overall, Asia has recorded the largest number of fishes compared to other regions in the world .I could have assisted you with the latter part if I had a chance of seeing your graph.