The graph illustrates the figure of four different species of fish, including Atlantic cod, haddock, yellowfin tuna, and swordfish from 1982 to 2007.
Overall, while there are two kinds of fish with record many changes in figure, Haddock and Swordfish remained unchanged the number of fish from 1982 to 2007. The highest number is Atlantic Cod, in contrast Swordfish is witnessed the lowest number.
Initially, Atlantic Cod started at 240.000 , before decreasing dramatically to 150.000 in 1992. In 2002, the kind of this fish went slightly up to 160.000, after that it declined to 140.000 at the end of periods. Furthermore, Yellowfin tuna began at 150.000 in 1982, and it rose sharply to 200.000 after a decade, following that it decreased gradually to 100.000 in 2007. Consequently, Yellowfin tune witnessed a considerable decrease less than twice compared to the beginning of the periods.
On the other hand, there are two kinds of fish which remain unchanged in all the periods, respectively Haddock and Swordfish. The former remained unchanged at 60.000 from 1982 and 2007. The number of Swordfish also didn’t change at zero which is the lowest figure between four different species in the periods.