To get a new aquarium in Fishdom, you must ensure all your current aquariums have 3 stars each. These stars are earned by adding fish and decorations to your aquariums. If you cannot unlock a new aquarium, check if all your previous ones have collected all three beauty stars.
These beauty stars are crucial because without them, you can’t progress to a new aquarium. You earn stars by enhancing the look of your aquarium, so make sure to add plenty of fish and decorations. The more beautiful your aquarium, the more stars you get.
If you find yourself stuck, consider revisiting your older aquariums. Add more decorations or fish to boost their beauty level. Each star you earn brings you closer to unlocking a new, exciting aquarium.
Taking the time to fully decorate each aquarium not only helps you progress but also makes your game more enjoyable. So, focus on making every aquarium as beautiful as possible to keep moving forward in Fishdom.