I decided last night that it might be a good idea to list the main types of Mirromy head gems.

Notes:

-Larger gems are typically for Mirromy that dwell in low light areas most of the time, like Deep Sea, Cave, and Polar.

-Longer gems are typically for those Mirromy who live in more dangerous areas, where they need to watch their back. Long gems help see further back. Climbers, Cave, Deep Sea, and Coastal are more likely to have these. An alternative to long gems, may be a larger quantity arranged around the head.

-Small Gems are most commonly for those in high light areas. Usually if they have small gems, more than two exist on the head. Pygmy, Climber, and Lake are most commonly with those.

These are not ALL arrangements of gems, however these are the most commonly seen. Gems can be anywhere on the forehead, and all the way to top of their head (crown), from the eye brow area up. They don't have them on the back of their head, or too close to the gills. They must be able to contact the skull directly.

The gems all connect through a spider-like web of nerves spawning from the center of the forehead. (where a singular gem will likely be set). This allows the gems to move as the Mirromy needs to adapt. When more gems are needed, often the nerves will slowly burst through the skin. (which is a very irritating and itchy sensation) They begin to create a crystalline blood filled gem, that is pretty hard. (hence why most gems are usually the color of Mirromy blood) It will continue to expand and begin drawing in light until the brain determines enough light is being received, thus halting growth.

The gems are quite hard; however their attachment to the skull is not set in. The can be moved and pushed gently. They are sensitive around it, much like cuticles on human fingernails. They can be scratched or damaged, however will heal over time.

Mirromy forced to adapt to pure darkness may have their gems overtake their entire fore head in plates to try and compensate for no light. These may cover the front of the face, and even the eyes in some cases. This however is rare, and it nearly always occurs in Mirromy that are blind. (regardless of light)