[Southack]

"The reason that ray-finned fish do not have some immune genes that we have is because there was considerable innovation in the immune system in mammalian evolution. These new immune genes are not shared by fish nor coral."

Coral and humans do share immune genes, it's the Fish that are missing some of those genes.

"Among the 25 percent of human genes without counterparts in Fugu (Puffer Fish) are key genes involved in the human immune system and metabolic regulation."

Prof Miller says another surprise has been that coral shares many genes with humans, including those related to the development of immune systems

[ahayes]

You seem to be having difficulty understanding. Let’s make it simple: List the genes that coral and humans share, but fish do not.