A study was carried out to assess the economic value of juveniles of commercially important species of finfish and shellfish caught as by-catch by multiday commercial trawlers operated off the coast of Visakhapatnam, north Andhra Pradesh from January 2014 to December 2015. Juveniles of twenty species (four species of cephalopods and sixteen species of finfish) were found to dominate the trawl by-catch. The landed juveniles of these 20 species formed 12,757.16 t and 286.86 million numbers per year and their contribution to the total landings of these species in trawl by-catch were 55.30% by weight and 57.03% by numbers. The highest percentage of quantities of juveniles (biomass) was found in trawl by-catch in the months of August and July in, 2014 and 2015 respectively. Among the juveniles, ribbonfish (Trichiurus lepturus) and goatfish (Upeneus vittatus) dominated, contributing together, on an average 11.60% by weight and 33.68% by numbers respectively. Using the bio-economic model, it was estimated that if the juveniles were allowed to grow up to length at first maturity; total annual economic gain would have been Rs. 273.21 crores (42.03 million USD) with biomass gain of 44,493.02 t per annum. The estimated total annual biomass would have increased 3.46 times with an increase in revenue by 4.20 times. Annual average loss due to fishing of juveniles was estimated to be Rs. 209.62 crores (32.25 million USD). The results of the present study suggested that sustainable harvest of these resources would have yielded maximum economic return to the fishers. With the help of stakeholders using a participatory approach, management measures such as increase of cod end mesh size of trawl to 40 mm from the present mesh size of 10–12 mm, use of square mesh for trawl cod ends, fishing effort restriction and awareness campaign on the detrimental impacts of catching juveniles needs to be implemented at the earliest for avoiding growth overfishing.

2014年1月至2015年12月，进行了一项研究，以评估在安得拉邦北部维沙卡帕特南海岸附近作业的多日商业拖网渔船作为副渔获物捕获的商业上重要的有鳍鱼类和贝类的幼鱼的经济价值。拖网副渔获物有二十种（四足类的头足类和十六种有鳍鱼）的幼体占主导地位。这20个物种的登陆少年每年形成12,757.16吨，2.886亿，它们对拖网副渔获物的总登陆量的贡献为55.30％重量和57.03％。分别在2014年和2015年的8月和7月，拖网捕捞中捕获的少年（生物质）数量最高。在少年中，ribbon鱼（Trichiurus lepturus）和绯fish（Upeneus vittatus）分别占平均重量的11.60％和33.68％。使用生物经济模型，估计是否允许少年在第一次成熟时长大；每年的总经济收益将为Rs。年产量为273,21千万千万欧元（4,203万美元），生物量增加为44,493.02吨。估计年度总生物量将增加3.46倍，收入增加4.20倍。估计每年因捕捞少年而造成的平均损失为卢比。209.62千万卢比（3225万美元）。本研究的结果表明，这些资源的可持续收获将为渔民带来最大的经济回报。在利益相关者的帮助下，采用参与式方法，