Abstract Thynnichthys thynnoides is one of fish species found in the Tanjung Kudu Lake, an oxbow lake of the Kampar River. A study aims to determine the type of food consumed by T. thynnoides was conducted from March-April 2021. Samplings were carried out 4 times, once/two weeks. The number of fish caught was 205, but only 131 fishes could be used as samples for stomach contents analysis,…