I have had the privilege of having a small variety of nano fish species in my tank. Size and looks are not the only consideration when choosing fish. Diet, compatibility and personality are equally important.
Doctors have long of delivering drugs to , and they may soon have a clever way to do it: fish. UC San Diego researchers have nanoscale metallic fish (they're just 800 nanometers long) that could carry medicine into the deeper reaches of your bloodstream. Each critter has a gold head and tailfin, as well as a nickel body joined by silver hinges. You only have to subject them to an oscillating magnetic field to make them swim -- there's no need for propellers or a passive (read: slow) delivery system. That, in turn, could make the drug carriers smaller even as they move quickly.
These nano aquariums are a very attractive choice for people who would like to keep a small number of fish in their bedroom. Other possible locations include offices and other commercial settings where the presence of a small fish tank can add a pleasant, lively atmosphere. In these situations, it may not be possible to dedicate much space to the fish tank, making the nano fish aquarium a very convenient option.
• Aquariums are often excluded from the, “no pets” rules common to small flats and college dormitories. A nano fish aquarium can be a convenient way to circumvent those rules.