Abstract: An architecture is presented for a device that enables a user to accommodate a number of betta fish, or betta fish and other fish species, in a segregated manner in a single aquarium for a prolonged period of time. More specifically, the device, among other things, enables an aquarium owner or user to partition said aquarium in such a manner as to permit the water contained within the aquarium to pass freely through said partition, while at the same time prohibiting the fish within the aquarium from doing the same.