Abstract: A modular fish tank includes a chamber including a front section and a back section. The front section of the chamber includes a spherical bulb extended out from the chamber and is configured to magnify objects in the back section of the chamber when the chamber is filled with water. In an arrangement of two or more modular fish tanks, at least one of the modular fish tank in the arrangement is in a contact position next to another one of the modular fish tank in the arrangement. A viewing station for the modular fish tank includes one or more levels, and the levels each includes one or more modular fish tanks.