Centriscus cristatus, also known as the smooth razorfish or wafer shrimpfish, is the largest member of the family Centriscidae of the order Syngnathiformes.

The smooth razorfish possesses a body at the same time very stretched and compressed laterally, it can reach a size of maximum 30 centimetres (12 in).

[5] Centriscus cristatus is found in the central Indo-Pacific area between in the west the western Indonesia until the Marshall Islands to the east, and the Australian shore (west, north and east) New Caledonia included for the southern limit to the south Japan in the northern limit.

[6] This is a benthic coastal species which occurs in estuarine brackish waters, gorgonian fields, and seagrass beds.

[5] Centriscus cristatus has a widespread distribution but the species may be in decline due to habitat loss as seagrass beds are destroyed or degraded.