Intensive and semi intensive aqua farming accompanies several disease problems often due to opportunities pathogen as evident from general aquaculture. High stocking densities, high food inputs and other organic loads stimulate the selection and proliferation of opportunitistic pathogens like bacteria, virus, fungi, protozoa etc. Shrimp are actively grazing on the substrate present in the pond bottom and water column. Therefore they highly expose to the exchange of micro flora between the environment and the digestive system. There are suggested entry of port for the pathogenic bacteria such as water, feed and air. This increase the risk for the proliferation of an unfavorable gut micro flora or frequent destabilization of the micro flora which can affect the optimal functioning of the digestive system. Furthermore the digestive system of shrimp is the main entry of port from protozoa, bacterial and viral infection which remain major risk of the profit ability of shrimp production.
Presently these are the most important Gut track disease in aquaculture

White Feces Syndrome (WFS)
White Gut Disease (WGD)
White Muscle Disease (WMD)