Advances in Social Science, Education and Humanities Research, volume 79262 baby) was 17.092 kg on September in the coordinate of 108.83° E and 08.50° S, and big eye baby tuna was 7.896 kg on January in the coordinate of 107.00° E and 08.00° S. Bigeye tuna is more dominant caught than big eye baby tuna in Southern Java between 105.00° to 110.00° E longitude and 08.00° to 10.00° S latitude, and slightly in Southwestern of Java. Based on the distribution of big eye tuna fishing ground in the Indian Ocean described that big eye tuna were caught in the range of SST, chlorophyll-a, and SSHA of 25-30°C, 0.10-0.71 mg/m3 and -0.14-0.16 m. The accuracy assessment of tuna fishing ground during 2015 by local fisherman associated with the prediction of potential fishing ground showed 78,82 % of accuracy.