This egg contains a purple fluid.

Tamers are unsure what this purple fluid is made out of. The fluid is not viscous and behaves similar to water. Shaking the egg shows the fluid move around inside its cavity. Frozen Duskburst eggs have historically been given as a gift to young tamers as a toy but is no longer a practice. A curious tamer reports the fluid exposed on the top of the egg to have the taste of both iron and honey. Speculation assumes that this taste comes from the diet of dark melons. 

This hatch is running out of space.

Two small dots appear on the sides of the neck of the hatch. When harvesting dark melons, the hatch generates a small string of the fluid to move melons closer to it. Hatches struggle to put the fluid back inside the cavity. One melon is enough to feed a hatch for a day. The hatch is observed to eat the entirety of the melon. The cavity is expanded into the hatch's limbs.

This hatchling feels a pressure inside it.

The light plates on the limbs of the hatchling are used to reflect moonlight while harvesting dark melons at dusk for better visibility. These hatchlings are hide in shadows during the day and harvest at night. Duskburst sometimes accidentally eat too many melons without feeling pressure. The heat from sunlight builds pressure inside the cavity, leaving a slight discomfort on the hatchling. This pressure lowers at night as it cools down.

It is a machine dragon that has a space to hold a mysterious fluid.

There is a gap inside the cavity of Duskburst in which the fluid can freely move. Duskburst is now comfortable with this larger space. Duskburst enjoy piercing dark melons using its headpiece and the reinforced spikes on its limbs and tail. If the water-like fluid is exposed to water, it does not mix with the water. Duskburst is able to pick up its fluid using its palms and place it back inside of its container. 

Gender Differences

Special Form: Overload

It is a machine dragon that has a ruptured space. The fluid that was once there now sticks on top of the dragon.

Special Form Criteria (These are ideas, there's probably better criteria ideas):

Tamer's gold storage is at maximum capacity when evolving to Adult.

Tamer's device battery is at 100% when evolving to Adult.

Tamer's nurture limit is at its maximum capacity when evolving to Adult.

Duskburst's comfort level reaches maximum sickness at least once.