The studies showed attaching organisms on the surfaces of test panels were bacteria, fungi, algae and protozoa; the microfouling organisms on the panels of the larval rearing tanks were commonly bacteria, fungi and ciliates; algae such as Licmophora sp. appeared occasionally. The composition of microfouling communities at all depths was similar. In the growout ponds, the commuinities consist of bacteria, fungi, algae and ciliates. The microfouling organisms on the panels at different depths were slightly different: at the upper layer of the ponds (0 – 50 cm), the attaching organisms were bacteria, algae and ciliates: at the median layer (50 – 100 cm) that were mostly bacteria, ciliates and less of fungi and algae; at the lower layer (100 – 150 cm) that were bacteria, fungi and ciliates, and rarely algae. The development of the community began with attachment of bacteria to the surface, followed by other attaching microorganisms (fungi, algae and ciliates). The bacteria, together with free living microorganisms (including unicellular microalgae, ameba, flagellata, cilliates, nematodes, rotifers, etc.) formed a slime film. The slime film formed on the larval tanks can keep in a larval rearing cycle, but that formed in the growout ponds could be replace by microorganisms including hydroids, bryozoa and bamacles. The composition and the developmental process of the microfouling communities on the panels and the body surfaces of shrimps are similar. It is suggested that there is a phoresis relation between peneid shrimp and microfouling organisms.