Changes in seasons cause an imbalance between supply and demand for fresh marine fish in South Sulawesi, Indonesia. On the supply side, there is oversupply during the fishing season (harvest), while the lean season (west and east) or the fishing season during the total moon production decreases. This also causes fluctuations in fish prices so that the impact on fishermen's income decreases. This study aims to estimate the real fluctuations in the price of fresh marine fish with a regression estimation model of qualitative independent variables. Based on the time dimension using time-series data (2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017)(2018)(2019) sourced from secondary data. The selected fish species are sardinella longiceps, malalugis, and indian mackerel. The findings show that the price fluctuations of the same species of fish affect each other. Likewise, time trends and regional (regency) differences significantly affect fluctuations in the price of fresh marine fish, while per capita income has no significant effect. The support from the government and stockholders in overcoming price fluctuations can be done through increasing catch production by increasing the number of marine fleets with gross tonnage strength and fishing gear with environmentally friendly technology. In addition, it cooperates with the processing industry and obtains price information on both the domestic market and the global market.