At present, more than 60% of the world's coral reefs are now under immediate and direct threats from coastal development, pollution, unsustainable and destructive fishing practices. Coral aquaculture is an activity of growing interest due to the degradation of coral reefs worldwide and concomitant growing demand for corals by three industries: marine ornamental trade, pharmaceutical industry and reef restoration. The global trade of marine ornamental species is recognized to be a multi-million dollar industry that still heavily relies on the wild collection. The ex situ coral aquaculture culture for the aquarium trade, restoration and other commercial purpose has been encouraged as a sustainable alternative to wild harvesting which has increasingly threatened coral reef ecosystem worldwide. The ex-situ culture has been practiced in two ways i) asexual propagation ii) sexual propagation. Culturing small propagules of coral has the potential for high yield with low environmental impact, and good survival. In the asexual mode, small fragments collected from the wild used as seed stockings to propagate. Then the stockings kept in small aquaria for regeneration where the substratum is provided. The environmental conditions for exsitu coral propagation must closely replicate those found on the reef in natural ecosystem. Sexual propagation starts with the collection of gametes (in broadcast spawners) or larvae (in brooders) using planktonic nets or larval traps. Once the larvae start settling they will be transferred to grow-out tanks for normal culture where it will be cultured for 6-8 months. Comparatively, asexual method of propagation is easier and economical than the sexual method of propagation. The successful cultivation and commercialization of exsitu coral aquaculture would help in restrict the dependence on wild collection which in turn improves the coral conservation.