Can you solve this fish riddle?

[ahlam1399]

http://img-s-msn-com.akamaized.net/tenant/amp/entityid/BBDpV8X.img?h=100&w=100&m=6&q=60&o=f&l=f&x=352&y=227Your cargo of rare fish was washed overboard. Can you figure out how many tanks you need to retrieve?

أكثر... (http://www.msn.com/en-in/lifestyle/smart-living/can-you-solve-this-fish-riddle/ar-BBDzxOW?li=AAgg3KH&srcref=rss)