This first piece is called Luminite, a term for a an small creature that can illuminate in the dark with not so bright focus of light. From the sketch version to the final render.
Below the 2nd concept came from an inspiration between creatures of the dark and light coming together to have a mutual development.
The final piece is a personal design, that came from a dragon concept soon then developed in the other album of traditional creatures. 

Survival Variety

Polaris