The Mallilian are one of the oldest species of the Coalition of Sentient Worlds. Their genetic make up is very impressionable and flexible. They are able to reproduce using DNA from almost any other organic species. They can also fuse with others.
This shows two species, the Endaleth, an old cepholapod-like species, and Silicath, a silicone based sentient crystals who use robotic drone bodies to move around.
Quillious are a species of sea horse-like beings, who's civilization was accidentally uplifted when the Coalition of Sentient Worlds went to their homeworld with plans to use it as a resource world. Those plans quickly were dropped after that mix-up.
The Guumii are a species of sentient colonial slime that feed on radiation much like how plants use photosynthesis. Finding the more radioactive energeis, like gamma, the more nutritious.
They often work in maintaining reactors on ships and power plants.