Aqua One BettaBloc is the easy and convenient alternative to keeping fish! Designed to house Betta fish (also known as Siamese Fighting Fish).The BettaBloc comes as a complete kit that is easy to assemble and maintain. BettaBloc tanks can be stacked to create a unique multi level look and make a great addition to any office desktop.Features and Benefits:• Complete kit ready for fish• Great for beginners• Modular design for multi-level housing• Safety lid to prevent fish ..