Many people are concerned that the capture and use of exotic marine animals for aquaria may be causing damage. What is safe to buy in environmental terms? Is it coming from a managed and sustainable fishery? Is it rare in the wild and perhaps at risk from over-collecting? Has it been collected and transported carefully to avoid stress? Will it survive in the long term? This volume addresses these questions and provides information to help aquarists and dealers make informed choices about the species of marine fish or invertebrate that they may consider buying, selling or keeping. The ultimate aim of the book is to help eliminate wastage and pressure on natural resources caused by people buying specimens that are endangered on the reef, collected in a way that causes damage, impossibly difficult to look after, or inappropriate for their level of expertise or tank set-up.