Gorgol XIII is a planet home to a mermaid-like race that are able to suck their food through their nostrils, albeit with great discomfort. (K9TV: Liberation)
As the Mermaid-like Merons appeared in the same episode as the Mermaid people of this world was mentioned. It is possible that Gorgol XIII is the Meron homeworld. Comments made by Jixey suggested that the Jixen and the Meron on the same planet, meaning that the Jixen too may have lived on Gorgol XIII.