Fisheries Bioeconomic Analysis on White Sardine Escualosa thoracata (Valenciennes) at Madura Strait, East Java, Indonesia

White Sardine (Escualosa thoracata) is one of small pelagic fish which is mostly caught by fishermen at Madura Island as their earning source for their living. Recently year, there is data mentioned that fishermen caught the fish by using Gill Net Monofilament as many as possible so that it was not based on the efficiency of biologic and economic sides. The units of its tool every year are increasing. So that it can danger and become over fishing. That is why, the purpose of this research has done is for getting the estimation of the optimal potential and the usage status on organizing/managing the fish resource, which cover the analysis of the Per Unit Effort (PUE) production, Maximum Sustainable Yield (MSY), Maximum Economic Yield (MEY), dan Open Access Equilibrium (OAE). The research has been done during May – September 2012. By using time series analysis method, the research has got the average of Catch Per Unit Effort (CPUE) from 2000 – 2011 as 7.5 ton/unit, with the value R 2 (Correlation Co-efficiency) = 0.941. The value R 2 shows the connectivity between CPUE and the Effort are very strong. The value of MSY as 4,416.46 ton per year with the value of Effort Optimum (Eopt) as 515 units per year, the value of MEY as 4,415.69 ton per year with the value of Effort Optimum (Eopt) as 515 units per year. The profit or economic renter production is as 40,110,411,174.37 Rupiahs. Then in OAE (Open Access Equilibrium) condition can produce the optimal (Copt) as 230.92 ton/year and effort optimum (Eopt) as 1,016 unit per year. The conclusion of Biologic and Economic research shows that Fisheries Bio economic Analysis on White Sardine (Escualosa thoracata) at Madura strait has been reaching over exploited, because the level usage in average during period 2000 – 2011 has reached 85%