Though in <em>English</em> the usual order of a sentence is: <em>Substantive/verb/complement</em>, in<em> Spanish</em>, is more free, in some occasions you could see a sentence beginning with the complement and finishing with the substantive, but in this case is the one thing that changes is that the noun is tacit (<em>it means that is not written because the verb make reference to it</em>), the noun, in this case, is "tú", after the verb is "mira" and the complement "ese pez tan grande".