The popularity of nano-reef tanks (or reef tanks under 30 gallons) has exploded over recent years. These delicate systems require specialized species that are able to survive and thrive in a smaller tank. Written by internationally recognized writer, underwater photographer, and marine biology researcher Scott W. Michael, The 101 Best Nano-Reef Species offers expert advice on selecting and keeping brilliant and hardy fishes, corals, and invertebrates for nano-reef tanks.