your looking at a female green terror in the first pic... male green terror's devlope hump's on there head's at about 5 1/2'' in lenght , as far as for royal they don't exist!!!...
i could be stunted by being cramped. ive seen it before when people had 25 4" convicts in a 55 along with 2 ornate bichir they were all grossly stunted the cons would have bean atleast 6". i also saw koi that were the same way from being cramed in a pond. all it takes is good filters and water changes.