The firecracker booster is one of the easiest booster to get in Fishdom Deep Dive. Match four tiles of the same color and you'll receive the Firecracker Booster. All the tiles next to the booster will explode. A pretty good booster to use and it helps you get rid of the hard parts in the level.
Match five tiles of the same color in Fishdom and you'll receive the bomb booster. This booster is pretty powerful. It will get rid of two rows next to the booster. One extra tip for fishdom deep dive; try to save a few bomb boosters and get them next to each other. Combine them in one move and you'll have a big explosion. This helps really well to complete difficult levels.
Match six tiles of the same color and you'll receive the Dynamite Booster. This booster is amazing and one of the most powerful boosters in the game. It will get rid of three rows next to where the booster is activated. This booster is a really good one to use when you're in a level with a lot of obstacles.
Match a stunning seven tiles in the playing field and you'll receive the Warhead Booster. This booster is sick! It will remove 4 rows next to where the booster has been played.
The Lightning Booster is a special booster which can be achieved by using the other boosters. After using the other boosters sometimes you'll get the Lightning Booster. Using the booster will remove all the pieces of one color in the playing field.