Pull the Pin: Fish Rescue!

Pull the Pin: Fish Rescue! is a relaxing and addictive puzzle game with lots of interesting puzzles. You will see several niches in it. They will be separated by partitions. In one niche you will see a fish, and in another water. You will need to carefully study everything and pull the pin. Thus, you will open it and water will get to the fish.
Your mission is simple: pull the pin and water will get to the fish.