From tank design to live feeding, this DIY build had to be done right. Octopus are intelligent predators, and housing one safely requires serious preparation. After setup, we introduced food and ...

A saltwater aquarium can be a dramatic addition to any room. Filled with exotic (and expensive) fish, it’s visually appealing and a great conversation piece. But it isn’t exactly easy to care for.

A large-scale 300-gallon saltwater reef tank is assembled as both a technical project and a personal tribute. The setup highlights the complexity of building a high-end reef system from the ground up.

If you have been feeling sorry for that lonely gold fish swimming around in a glass bowl in your drawing room, and are planning to give it to a few friends and a larger tank, think again. Goldfish ...