Biometric and diet analysis of species Scyliorhinus canicula and Scyliorhinus stellaris in the eastern Adriatic were investigated in this thesis. The total sample of the species S. canicula had a range of total length from 36.5 cm to 50.3 cm, and males outnumbered females, while the total sample of the species S. stellaris had a range of total length from 36.5 to 48.0 cm and females were more numerous than males. Sexual dimorphism is shown by many morphometric traits. Males have longer and narrower mouth than females. In most parameters, males had higher mean values, with statistically significant difference, while females had higher mean values of mouth width and pectoral fin length, but without a statistically significant difference. The stomach contents of individuals collected for three months (October and December 2021 and February 2022) were analysed. Out of a total of 104 stomachs analysed, 90 had recognizable prey material. The identified prey was classified into 4 main taxonomic groups: Arthropoda, Annelida, Mollusca, and Chordata, and if it was not possible to determine the prey, it was classified into the 'unidentified' category. Decapods dominated in all three months, and Alpheidae stands out as the most abundant prey identified to family level. Feeding index (F%, N%, W%) and feeding coefficients (IRI, MFI, Q) showed that arthropods and fish are the main pray of the species S. canicula, while arthropods and annelids are the main pray of S. stellaris, which confirms their key role in the food web.