Megaquarium is the new game from Big Pharma developer Twice Circled that has you managing an aquarium business. A twist on the theme park tycoon management genre has you dealing with an aquatic twist on the genre including designing your displays, caring for fish and more.
Here's a description from the developer:
Megaquarium is the public aquarium tycoon game from the creator of Big Pharma. Pick from almost 100 different species to house in your exhibits, satisfy their needs and don’t let them die! Hire a team of aquatic experts, manage them efficiently and level up their skills. Ensure your guests have access to key facilities like toilets and snacks, then squeeze them for their last penny as they leave via the gift shop! All this and more leads to a successful aquarium. Do you have what it takes to make the biggest attraction in the city?