The Flekke are a species mentioned in Surface Detail.
They are described as being elliptical in shape, dark and glistening, with fringing or tentacles at either ends. It is implied that they are an aquatic species.
The Flekke made first contact with the Sichultia, mentored the GFCF, and are allied with the Nauptre Reliquaria. As previous mentors to the GFCF, who are stated to be a Level 7 civilization, the Flekke are presumed to be at Level 8.