The researchers studied the fatty acid composition of a fish called Chalcalburnus tarichi in Van Lake, Turkey, during summer and winter. They found that polyunsaturated fatty acids were higher than monounsaturated ones in both seasons. The most abundant fatty acids were palmitic and stearic acid. Linoleic acid was the main polyunsaturated fatty acid in summer. The fish had higher levels of omega-3 fatty acids compared to omega-6 in winter. The ratio of omega-3 to omega-6 fatty acids was higher in winter than in summer. Overall, the fatty acid composition of Chalcalburnus tarichi in Van Lake varied with the seasons and the species.