👉 The term "canthari" is not commonly used in everyday language or scientific terms. Cantharia, also known as fish lice, are a type of parasitic nematode that live on the skin and hair of many animals, including humans. They feed on the blood of their hosts and can cause severe itching, rashes, and other symptoms. Canthari are not considered a biological entity in the traditional sense but rather a part of the animal kingdom.