Jelly fish are a very common booster in Candy Crush Saga. The jelly fish love to eat jelly! These are great to use on any jelly level where you need jelly squares crushed. These fish will simply swim around the board and destroy 1 jelly square per fish. These are great to use when you are very close to winning a jelly level and you just need that extra little help crushing a few jelly squares. This booster can be found on the Candy Crush Booster Wheel.