What size should branching corals be for out-planting?

Branching corals are typically recommended for out-planting at a size of 5-15 cm in diameter because this range strikes a balance between suitability for survival and growth potential in natural environments. At this size, corals are large enough to withstand predation and physical disturbances, yet small enough to adapt more readily to new conditions when transplanted.

Corals that are smaller than this range may lack the structural integrity necessary to survive environmental stresses and might not have developed sufficient energy reserves for adaptation. Conversely, corals larger than this size may experience higher stress during the transplantation process due to greater weight, susceptibility to physical damage, and may not establish as well in their new habitat. As a result, the 5-15 cm range is often viewed as optimal for enhancing survival rates and successfully promoting coral reef restoration efforts.