Compatibility and Social Behaviors Care needs to be taken when housing these animals. The Corynactis genus are aggressive. If they are near another coral they can cause other corals to loose tissue, recess and/or die. They typically overtake other corals as they multiply. The C. californica will extrude their mesenteries into certain sea anemones and corals and kill them. They will extend their filaments resulting in all other corals, including zoanthids, to retract, move, or die. The Corynactis genus will only get along with their own species, and will not even tolerate mushroom species outside their colony. Even in one genus, if the color is different, again a different species, the weaker mushroom will detach and find another location. Strong water movement will also cause them to detach as well. Slow moving fish and shrimp run a risk of being consumed by the Corynactis genus.