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The key success of producing grouper seed depends on the availability of high and complete nutritive live food (zooplankton) during larvae development stage. Rotifer and Artemia are common zooplankton that has been used in most of grouper hatchery. The cysts of Artemia is expensive because it's still imported, therefore potential zooplankton from Indonesians waters should be developed to replace or to substitute Artemia. Copepod Oithona sp can be found easily in Indonesian marine waters. Oithona sp can be developed to adult stage within 7 days. One female Oithona can produce 8 to 22 nauplii with average 14,39 ± 3,62 nauplii. The larva of humpback grouper (Cromileptes altivelis) fed by Oithona sp showed a higher DHA content (0,30 % b/b) than those fed by copepod + Artemia (0,15 % b/b) and and Artemia only (0,03 % b/b). The EPA content in larva fed by Oithona also showed the highest, 0,30 % b/b. However, improvement technique of monoculture Oithona should be carried out due to mass mortality and contamination by protozoan and rotifer.

The development of sustainable model of aquaculture by applying Sato Umi concept within coastal area of Indonesia has expanded from the center of first experiment in the northern coastal area of west Java to central Java (western Indonesia) and Bantaeng in the South Sulawesi of central Indonesia. The similar program has also been proposed for Maluku Province in the eastern part of Indonesia. In the next 5 years, Indonesia is developing the Techno Parks Program in some areas, in which aquaculture and fisheries activities development on the base of Sato Umi concept in the coastal area are involves in this program. The development of Techno Parks are directed as a center application of technology to stimulate the economy in the regency, and a place of training, apprenticeship, technology dissemination center, and center business advocacy for the public. Hopely, Sato Umi concept that has a similar spirit with Techno Park can be applied to support the implementation of Techno Park program in Indonesia

Teknologi budidaya perikanan terintegrasi multi tropik IMTA (Integrated Multi Tropic Aquaculture) dengan menggunakan ikan nila, udang, rumput laut dan kerang yang dipelihara dalam satu kolam telah menunjukkan produktivitas yang tinggi dan stabilitas lingkungan yang cukup baik dibandingkan dengan yang monokultur. Demikian halnya denga budidaya yang sejenis walau tidak menggunakan kerang, telah memberikan produktivitas dan kualitas air yang lebih baik. Namun demikian kualits tanah juga berpengaruh besar terhadap keberhasilan budidaya terutama untuk komoditas udang windu yang hidup di dasar. Nilai potensial redox yang negatif dapat menjadi tanda buruknya kualitas tanah untuk budidaya dan perlu di rehabilitasi. Untuk tanah seperti ini nampaknya ikan nila dan rumput laut menjadi alternatif komoditas yang cukup baikuntuk dikembangkan, karena pertumbuhannya tidak terganggu. kata kunci : Keragaan Model Budidaya Perikanan Terintegrasi Multitropik,Pantai Utara Karawang AbstractIntegrated Multi Tropic Aquaculture (IMTA) technology by using tilapia, shrimp, seaweed and shellfish that are cultured in one pond integrately have demonstrated high productivity and environmental stability compared to the monoculture. Similarly, cultivation of similar model with unusing a shell has been providing productivity andbetter water quality. However, soil quality also greatly affect on the success of farming, especially for commodity shrimp that live on the benthic. Negative redox potential value can be a sign as a poor quality of land for cultivation and needs to be rehabilitation. For this kind of soil, cultivation of tilapia and seaweed as alternative commodities is excellent to be developed, because their growth is not disturbed. key words : Performance of the Integrated Multi Tropic Aquaculture (IMTA) Model in the northern coastal area of Karawang, West Java