Some histological reveals on reproduction of one of the lessepsian species, Nemipterus randalli in Antalya (Turkey)

In this study, the reproduction of Nemipterus randalli, one of the lessepsian fish catch from the Gulf of Antalya, Turkey was interpreted histologically. Regarding the fish used in this study (N = 1715), it is noteworthy to mention that male individuals are larger than females. The first sexual maturity in males was determined 17 cm TL and 60 g in BW, whereas 13 cm TL and 25 g BW in females. Females reached sexual maturity at age I+ and males at the age of II+. Seven different stages (O1-O7) were identified in oocyte maturation in the ovaries. The spawning time of N. randalli in the Gulf of Antalya extended from June to October (Peak on July-August), given the histological interpretation of the development in gonads and the GSI % data. According to this data, N. randalli may be described to have a Batch spawner characteristic.