Co culture of aquatic organism quite complicated which was need high balancing management for increased productivity when compared to monoculture. The waste of nitrogen compounds degradation of the food lead to low quality of water in culture system and .impact on the aquatic organism health. The animals co-culture with seaweed could maintained water quality in a pond and increased the survival rate of the fish. Study on co-culture of sea bass Lates calcarifer with 3 different algae aimed to use the algae for problem solving of eating among them self by hidden in the materials and to improve the water quality.