You might be thinking about candy crush soda because there are no fish in this level of candy crush jelly. You have to spread the jelly over 3 different screens/stages. It’s impossible to because there’s not enough moves to do so.
Make fish to hit the bottom candy stick. When you're about to hit the last mark to make it burst, use a fish candy and a vertical stripe candy together. It will spread the jelly up to the second column. Then you use a striped candy to hit the horizontal column facing the striped candy that comes down after you get rid of…