Fuchida's species were an alien race in the Sappora system during the late 2370s. Members of this species inhabited or were employed on the planets New Sydney and Sappora VII. (DS9: "Prodigal Daughter")
The usual clues about the various guest aliens were not mentioned in the episode's script; it simply made reference to Fuchida's rank and agency of employment.
The makeup for this species strongly resembles that of the make-up worn by the Delta Quadrant species Vhnori, as depicted in VOY: "Emanations".