Abstract The use of immunostimulants as an
alternative to the drugs, chemicals and antibiotics
currently being used to control fish diseases in fish
culture is attracting the attention of many researchers.
In this context, many have focused on the use of
medicinal plant products as potential therapeutic
measures for modulating the immune response and,
specifically, on the use of herbs to prevent and control
fish diseases. Medicinal plants (plant remedies) are a
deeply rooted component of the cultural heritage of
many people from diverse cultures and countries and
are, as such, closely linked to the maintenance of
good health. The aim of this paper is to review
research currently being carried out on the herbs and
herbal extracts that have been shown to modulate the
immune system of fish. Special attention is given to
the use of Chinese and Indian herb