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Not AvailableForty countries on six continents, are using the artificial reef technology today. Artificial reefs are reported to increase fish catches by 20 to 4000%, prevent overfishing and "with greater awareness of the world's deteriorating marine envirorunents, there is increasing reliance on artificial aquatic habitats in the world" (Grove and Sonu, 1991). When natural reefs like coral reefs and rocky reefs in tropical coastal waters are known for their high biological and fishery productivity and diversity, why not artificial reefs accomplish the same? Artificial fish habitats are of two types, benthic Artificial Reefs (ARs) to attract demersal fish and Fish Aggregating Devices (FADs) to attract column as well as pelagic fish.Not Availabl