Study of Reproduction Biology of Lionfish Pterois Miles (Scorpaenidae) in Syrian Marine Waters

The reproduction of Pterois miles, which is the Lessepsian species that invaded eastern coasts Mediterranean Sea, was studied. It established abundant populations along Syrian coast and began to compete with native in respect their diets and, habitats as well prey on them. study included analysis data 259 samples caught marine waters (2019–2020), results show this has two periods: a long period during summer short one fall. GSI% value, represents percentage gonad weight relative eviscerated body weight, for females 4.09±3.68% 3.28±1.94% fall, while value males 2.04±1.30% 1.14±1.33% Also, HSI% liver body, high both females. individuals are characterized by fertility, females, number eggs 115332–313575. length 24–32 cm visceral 166.67–311.81g. diameters were 39.84–43.47 microns. Therefore P.miles constitutes serious threat environment its wealth fish.