Plankton composition in Milkfish’s (Chanos chanos) stomach cultivated in traditional pond

Abstract Milkfish is a brackish-water cultured fish that widely cultivated in traditional ponds because the business capital relatively small and feed provided only from natural food form of plankton. This study aims to determine type plankton stomach frequency feeding occurence milkfish order preferred by milkfish. used survey method. The composition found consists 8 divisions, namely Bacillariophyta, Chlorophyta, Cryptophyta, Cyanophyta, Myozoa, Charophyta, Rotifera, Arthropoda. However, Charophyta Arthropoda divisions not Probolinggo pond. highest Pasuruan pond was Chlorophyta division (38%), while Probolinggo, Bacillariophyta (52.4%). Feeding occurrence second 100% for Bacillariophyta. similarity index based on two around 66.9%, indicating types consumed sufficiently high between ponds. Based results this study, can be said herbivores their stomachs there are 99.8% phytoplankton 0.2% zooplankton.