It has been documented in a number of food
animals that gastrointestinal bacteria play important roles
in affecting the nutrition and health of the host organism.
Thus, various means of altering the intestinal bacteria to
achieve favorable effects such as better resistance to
pathogens, enhancing growth and immune stimulation of the
host organism have been investigated in various fish and
shrimp. In this respect, probiotics and prebiotics are used
in farm animal and for aquaculture, although the probiotic
approach has been extensively used and advocated, viability
after ingestion is difficult to guarantee and almost
impossible to prove. The prebiotic concept dictates that non
viable dietary components fortify certain components of the
intestinal flora. This concept has the advantage that
survival of the ingested ingredient through the upper
gastrointestinal tract is not a prerequisite because it is
indigenous bacterial genera that are targeted. Despite some
positive effects prebiotic supplements on fish and
crustaceans have been published however it seems such
information for aquatic organism is inadequate. This paper
will give short review of recent studies in which the
effects of various prebiotics have been evaluated for
potential application in the aquacultural production of fish
and shrimp.