Polin, A. A., Pashkov, A. N., & Denisova, T. V. (2022). Variability in the number of rays and specification of the dorsal fin formula of the black scorpionfish Scorpaena porcus Linnaeus, 1758 (Pisces: Scorpaenidae) from the Black Sea. Marine Biological Journal, 7(1), 65–77. doi: 10.21072/mbj.2022.07.1.06