thats not what the tutorial says. Says to keep the needle in the center

Objective: the Needle is in the middle of the Range when the Timer runs out
+ Tap the left or right side 'TAP' buttons to push the Needle towards the center.
+ Continue tapping either button to keep the Needle in the center of the Range.
+ If the needle is in the center when the Timer runs out, you win!
+ If the needle is not in the center of the Range when the Timer runs out, the fish gets away.