If given a chance, they will attack other animals, including parrots much larger than themselves. Hand-fed babies make wonderful pets if placed in a home right after weaning and handled regularly. Being highly intelligent they often can be taught to do tricks and can learn to talk. Pacific females tend to be more dominant than the males and can become nippy if spoiled or neglected. It is not unusual for Pacific pairs to bicker with each other when they are not raising babies.
Most pairs make excellent parents and can be used to foster other species of parrotlet.
Another common species, Green Rump parrotlets are also the smallest weighing around 22 grams and less than five inches in length . They have a delicate, streamlined body with a small beak in proportion to their heads. The males have bright, cobalt blue on their primary wing feathers while the secondaries are turquoise. They are the only species of parrotlet in which the males have green rumps instead of blue. They are also a relatively easy species to breed with almost no aggression between pairs.