So according to Greg Keyes' comment on this Instagram post , Genitor is just a term he used to describe the giant fish sub-titan as being both the creator and controller of the smaller fish.
Drew Edward Johnson also called the giant fish sub-titan in this Twitter post King Murderfish.
So as for putting the names of both the king and smaller fish on Wikizilla should we keep its name as is since Genitor has basically become its official name by now since everyone online calls it Genitor. Or should we change it to Murderfish and King Murderfish.