title: Otolith Shape Analysis of the Mediterranean Horse Mackerel, Trachurus mediterraneus (Steindachner, 1868) (Perciformes: Carangidae) from the Coastal Waters of Sevastopol and Balaklava (the Black Sea)
abstract: Otolith shape analysis was conducted with two methods on nine samples of the Mediterranean horse mackerel Trachurus mediterraneus (Steindachner, 1868) caught in Sevastopol and Balaklava bays in 2017–2018. The first method was based on morphometric measurements: length, width, perimeter, and area, which were adjusted to the average fish length from all studied samples; six otolith shape indices were obtained for the analysis: aspect ratio, circularity, rectangularity, roundness, form factor, and 
journal: Russian Journal of Marine Biology