Silver moony, Monodactylus argenteus (Linnaeus, 1758), belonging to the family Monodactylidae, has high significance in the ornamental fish industry. The present study provides the details of captive broodstock maturation, induced breeding and larval rearing of this species for the first time. Juveniles were collected from wild and raised to adults in net cages. Female with oocyte diameter =500 µm and oozing males were selected in the sex ratio of 1:2 (female: male) and induced to spawn using a single dose of LHRHa. Spontaneous spawning and fertilization were observed after 36 to 40 hr of hormonal induction. The average fertilization and hatching rates were 83.50 ± 4.37% and 70.83 ± 5.19% respectively. The incubation period was observed to be 18 to 20 hr at a temperature of 29 ± 1.8°C. Newly hatched larvae measured 1,630 ± 0.20 µm in length. Larval rearing was carried out in 500‐L circular fibre reinforced plastic tanks using a green water system. Larvae were stocked at 5 L⁻¹ in larval rearing tanks. Initial mouth opening and complete yolk absorption were observed at 48 and 96 hr post‐hatching respectively. Larval feeding was done using live feeds, rotifer and Artemia nauplii. Metamorphosis began on 23 dph, and 100% larvae became juvenile on 32 dph with an average survival rate of 49.6 ± 8.73%. These findings on the development of captive seed production of silver moony would pave the way for mass scale production and reduced exploitation of wild stocks.

中文翻译：

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苦咸水观赏鱼银月桂（Monodactylus argenteus）的捕获成熟，繁殖和种子生产（Linnaeus，1758年）

银月亮，Monodactylus argenteus（Linnaeus，1758），属于Monodactylidae科，在观赏鱼产业中具有重要意义。本研究首次提供了圈养亲鱼成熟，诱导繁殖和该物种幼体饲养的细节。从野外收集少年，并在网箱中饲养成年。以1：2的性别比（雌性：雄性）选择卵母细胞直径= 500 µm的雌性和雄性渗出的雄性，并使用单剂量的LHRHa使其产卵。荷尔蒙诱导36至40小时后，观察到自发产卵和受精。平均受精率和孵化率分别为83.50±4.37％和70.83±5.19％。在29±1.8℃的温度下观察到孵育时间为18至20小时。新孵化的幼虫长1630±0.20 µm。使用绿水系统在500L圆形纤维增强塑料罐中进行幼体饲养。幼虫的放养量为5 L^-1在幼虫饲养箱中。分别在孵化后48小时和96小时观察到最初的张口和完全的卵黄吸收。用活饲料，轮虫和卤虫无节幼体进行幼虫喂养。蜕变开始于23 dph，而100％的幼虫在32 dph时变为幼虫，平均存活率为49.6±8.73％。这些关于银月桂圈养种子生产发展的发现将为大规模生产和减少野生种群的利用铺平道路。