we have a small companysalesman dark yellow fish and lolly fishand we want help from youCylindrical with a smooth body surface.Black, always with fine covering of sand except for the circular patches along the sides. If the body surface is rubbed vigorously a red fluid is discharged.This is the most common species in the region and can be found in most types of habitats. Average density is several hundred animals per hectare, but may reach several thousand per hectare in some atoll lagoons
