Reptadeonella fissa is recorded from the Indo-Pacific, including Australia.
Original description: Microporella fissa Hincks, 1880
Locality: Indian Ocean.
; Holotype: BMNH 1899.5.1.1217; Paratype: BMNH 1897.5.1.668.
Description from Tilbrook, Hayward & Gordon, 2001. (PDF file)
Description from Tilbrook, 2006. (PDF file)