UNCULUS
unculus: translation
(plural unculi))
a horny projection arising from a single cell of the epidermis, unlike the multicellular, horny breeding tubercles; found in Chanidae, Cyprinidae, Balitoridae, Sisoridae, e.g. on the disc ofGarraand over much of the body surface in some Sisoridae. Function is possibly adhesive, protection of the skin, rasping and hydrodynamic