Ikan tawes (Barbonymus gonionotus) merupakan suatu sumberdaya perairan yang bernilai ekonomis penting menjadi hasil tangkapan utama para nelayan di Desa Atap dengan penangkapan tradisional. Penelitian ini bertujuan untuk mengetahui kebiasaan makan ikan tawes di Sungai Sembakung Desa Atap. Penelitian dilakukan selama 4 bulan dengan menggunakan Prupossive Sampling. Pengambilan sampel dilakukan menggunakan alat tangkap jaring insang. Penelitian ini menggunakan data persentase ikan dengan lambung berisi (PILB) dengan nilai 100% setiap bulannya, index of stomach content (ISC) dengan hasil yang didapatkan berkisar 2,66-8,07, index of Preponderence (IP), dan pengukuran kualitas air dilakukan secara langsung. Komposisi makanan ikan tawes ditentukan dengan menghitung index of Preponderence (IP), sehingga diperoleh 89 % makanan utama berupa lumut, sedangkan makanan pelengkap yang tidak terifentifikasi 7 % beberapa potongan rumput dan biji – bijian, dan makanan tambahan 4 % berupa akar. Hasil yang diperolah menunjukkan bahwa ikan tawes bersifat herbivora.
Kata Kunci: Habitat, herbivora, makanan utama

Tawes fish (Barbonymus gonionotus) is a water resource that is economically important and is the main catch of fishermen in the Desa Atap with traditional fishing. This study aims to determine the eating habits of Tawes fish in the Sembakung Desa Atap. The study was conducted for 4 months using purposive Sampling. Sampling was carried out using a gill net fishing gear. This study used data on the percentage of fish with a stomach filled (PILB) with a value of 100 % each month, index of stomach content (ISC) with results ranging from 2.66 - 8.07, index of preponderence (IP), and water quality measurements. done directly. The composition of the Tawes fish diet was determined by calculating the index of preponderence (IP), so that 89 % of the main food was obtained in the form of moss, while 7 % non-identified complementary foods were some grass clippings and seeds, and 4 % additional food was in the form of roots. The results obtained indicate that the Tawes fish are herbivorous. Keywords: Habitat, herbivores, main food