In detail, epidermis of non-infested fish was composed of a basallayer of cubic or columnar cells whose function is to replace those thatare detached on the surface, a multi-layered medium layer of cells ofvariable and glandular dimensions, and an outer one formed by one ortwo rows of flattened surface cells parallel to the body surface.Immediately after, the layer of pigmented cells was found the dermis,composed of collagen fibers, whose main elements of the inner portion are fibroblasts