is that a Kraken?! • Upgrade tanks Buy new fish tanks and improve the existing ones so that you can accommodate even more fish. Adding tank decoration or information stands will make customers even happier, which will translate into more donations! • Expand Upgrade your gift shop by adding new sale items or improving the existing ones. You can also add other exhibits rooms to host other species such as otters, penguins or lobsters. Your customers will appreciate it and will spend more money! Take your aquarium to the next level and become rich!