Shell very small (<1.5 mm), depressed, bicarinate and widely umbilicate; formed by about 3,25 whorls of rapid growth.
Protoconch large in relation to the size of the shell, about 400 µm in diameter, having about 2 whorls; it is apparently smooth in the first 1,5 whorls, and the remaining granulose part has very small tubercles and terminates with a change when the new sculpture of the teleoconch begins. Teleoconch with 1,25 whorls, having two peripheral carinae located respectively near the adapical part of the shell and delimiting the base; straight edge. The whole teleoconch is covered by spiral cords of regular size, which develop in zigzag and are crossed by thick axial growth lines that make up a typical reticule.
Profile with spire and base convex, periphery flat. At the base, the spiral cords are more flattened and less prominent, disappearing when they reach the last quarter of whorl. Aperture oval, prosocline; parietal area covered by a thin callous coating; columella slightly tilted, not thickened or reflected towards the umbilicus; outer lip with smooth margin, modified and expanded laterally by the presence of carinae, which form two angles internally. Umbilicus wide, allowing the previous whorls to be seen, delimited by a thin carina which angles it; on its inner wall only fine growth lines can be observed. Dimensions: the holotype is 1.3 mm in diameter.

This species is characterized by the large protoconch (>400 µm diameter) in relation to the diameter of the shell (31%); the shape and location of the peripheral carinae; the reticulum formed by cords in zigzag and axial growth lines; the umbilicus is wide and limited by a thin carina.
Anticlimax fijiensis spec. nov. has a very different profile with two more prominent carinae (see below).

Only known from Vanuatu, between 622-625 m. Habitat: Bathyal species dredged at 622-625 m.