Aspects of reproduction and population structure were investigated between June 2017 to May 2018 in sardines, Sardina pilchardus (Walbaum, 1792) from the Safi fishing area. The sex ratio was generally in favor of males (${\chi }^2=19$.50). Out of 3252 total specimens sampled, 1404 were females (46.00%), 1648 males 50.68%) and 200 immatures (6.15%). The immatures were best represented in the small size classes, between 8 and 12 cm. This study showed that sardines can breed throughout the year with a peak breeding season between November and February. The gonado-somatic index (GSI) and the condition coefficient (CC) evolved almost invariably. The volumetric absolute body condition index [kv= Fresh total body mass (g)/total body volume (cm3)] showed two peaks, which are discriminately sex dependent. For females, the peaks are concomitantly observed in September and April while for males, these are shown in June and February. Moreover, the morphometric index ($k_{\mathrm{n}}$) showed a single peak in January and September for reproductive males and females, respectively. As regards the non-reproductive individuals the males have two peaks in June and December or females, they have one peak in November. Additionally, the GSI showed a single peak in February. The size at first sexual maturity in males and females was 16.1 cm and 16.5 cm, respectively.

在2017年6月至2018年5月期间，对萨菲渔区的沙丁鱼，沙丁鱼pilchardus（Walbaum，1792）进行了繁殖和种群结构方面的调查。性别比例普遍有利于男性（${\chi }^2=19$.50）。在总共3252个样本中，女性1404名（46.00％），男性1648名50.68％）和200个未成熟样本（6.15％）。在8至12厘米之间的小尺寸类中，未成熟的动物最好。这项研究表明，沙丁鱼可以全年繁殖，繁殖季节在11月至2月之间达到高峰。性腺体指数（GSI）和条件系数（CC）几乎总是不变的。绝对身体状况指数[kv =新鲜总体重（g）/总身体体积（cm3）]显示两个峰，这两个峰是性别相关的。对于女性，峰值同时出现在9月和4月，而对于男性，峰值出现在6月和2月。此外，形态计量指数（${ķ}_{\mathrm{ñ}}$）分别在1月和9月的生殖雄性和雌性中出现单一高峰。至于非生殖个体，男性在6月和12月有两个高峰，而女性在11月有一个高峰。此外，GSI在2月显示了一个高峰。男性和女性初次性成熟时的大小分别为16.1厘米和16.5厘米。