John1014;755455 wrote: If you were really interested in DNA, you could do the cytochrome oxidase a,b,c genotyping for cheap enough. I could do it here in the lab with ease. I would just need a generic primer pair, some cheap PCR reagents, a couple bucks to send it off for sequencing, and the most expensive part, the actual corals to extract genomic DNA from. However, there's no guarantee it would ever show anything "special" about the corals. The DNA may read out exactly the same as some Darth Mauls, and if it is just a freak morph from a colony of them, it probably will. You would need a much more sensitive (and expensive) genetic analysis if you really wanted to compare two corals which were very morphologically similar in order to confirm authenticity using DNA.
Sorry. Just nerding out. For now, I'm happy just going with a name and somebody's word to tell me that my corals are authentic.