I have had all three in the same tank before.
The female parrott and the male JD were paired up and always hung out together in their little ship. The GT (dont know the sex) was basically the ruler of the tank. But anytime the JD came out of the ship for food or whatever the GT always backed off.
My JD is also very shy and never comes out of his ship unless all the lights are off and its dark or there is food.
Also, i got the GT about 7 months after the JD and Parrott. They never fought once. The GT grew very quickly and was about the size of the JD in about 5 monhs. Still none of them ever fought and they were ok.
The female parrott and the male JD were paired up and always hung out together in their little ship. The GT (dont know the sex) was basically the ruler of the tank. But anytime the JD came out of the ship for food or whatever the GT always backed off.
My JD is also very shy and never comes out of his ship unless all the lights are off and its dark or there is food.
Also, i got the GT about 7 months after the JD and Parrott. They never fought once. The GT grew very quickly and was about the size of the JD in about 5 monhs. Still none of them ever fought and they were ok.