10.18453/rosdok_id00001641 Yulianto, Irfan Irfan Yulianto Universität Rostock 2015 590 Zoological sciences 2015 en http://purl.uni-rostock.de/rosdok/id00001641 urn:nbn:de:gbv:28-diss2015-0191-6 The high economic value of groupers caused fishermen to increase their effort, and as a consequence groupers are often heavily exploited. Several solutions have been implemented to solve this problem such as stock enhancement. The objective of this study was to examine the potentials and risks of grouper stock enhancement activities in Indonesia. The research was conducted in Karimunjawa Islands, Indonesia. To address the objectives, a fish length estimate underwater study, grouper stock assessment, grouper release experiment and monitoring the impact of the released fish were conducted.