The silver pomfret (Pampus argenteus) is one of the most commercially important marine fish species in the Bay of Bengal, Indian Ocean. However, detailed information on the reproductive biology of silver pomfret is limited for the Bay of Bengal, Bangladesh. To understand their reproductive biology, especially the gonadal developmental cycle and spawning season, a total of 373 individuals were collected monthly from February 2016 to January 2018 and examined. The total length (TL) and weight (TW) of P. argenteus ranged from 18.82–35.73 cm and 89.26–617.60 g, respectively. The highest gonadosomatic index (GSI) values were observed from April–June with a second (smaller) peak in October. The highest oocyte diameter was observed in May (630.50 ± 96.70 μm), when the fish reached full maturity, and the lowest was observed in July (35.10 ± 7.12 μm), when new eggs began their development for the next spawning season. The maximum number of eggs in the ovary were found in the yolk granule stage in May with a number of post-ovulatory follicles, which indicated that the ovaries developed to a peak leading up to the spawning season. A number of spermatids were also seen in males in April–June along with females. From these detailed observations, it may be concluded that P. argenteus shows two spawning peaks, in May–June and October. This observation will be helpful for the artificial breeding, sustainable management and conservation of this species in the study area.

中文翻译：

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孟加拉湾银鲳 Pampus argenteus 的生殖季节性和性腺成熟

银鲳鱼（银杏) 是印度洋孟加拉湾最具商业价值的海洋鱼类之一。然而，关于银鲳繁殖生物学的详细信息仅限于孟加拉国孟加拉湾。为了了解它们的生殖生物学，特别是性腺发育周期和产卵季节，从 2016 年 2 月到 2018 年 1 月，每月收集并检查了 373 只个体。总长度（TL）和重量（TW）P. argenteus范围分别为 18.82–35.73 cm 和 89.26–617.60 g。从 4 月到 6 月观察到最高的性腺体指数 (GSI) 值，在 10 月出现第二个（较小的）峰值。在 5 月观察到最大的卵母细胞直径 (630.50 ± 96.70 μm)，此时鱼已完全成熟，而在 7 月观察到最小的卵母细胞直径 (35.10 ± 7.12 μm)，此时新卵开始为下一个产卵季节发育。5月份卵黄颗粒期卵巢中卵子数量最多，排卵后卵泡数量较多，说明卵巢发育到产卵期前的高峰。在 4 月至 6 月期间，男性和女性中也发现了许多精子细胞。从这些详细的观察中，可以得出结论：P. argenteus显示了两个产卵高峰，分别在 5 月至 6 月和 10 月。这一观察结果将有助于研究区该物种的人工繁育、可持续管理和保护。