All of our live corals, invertebrates, and fish are sold with their dimensions listed... Here are a few notes pertaining to that.

Listed Product Dimensions

All product dimensions are accurate, but may include slight variation due in part to coral growth, fragging process, etc.

For example, when purchasing a frag listed as 1", you may receive a frag which is actually 1.5" or larger (but no smaller than stated size). This would be due to variations in the fragging process, as well as natural growth of the coral. When purchasing a colony listed as 8" x 4", yours may be 9" x 4.25". Again, this can be attributed to natural growth since the item was inventoried and listed.