养殖业板块11月17日跌1.81%，立华股份领跌，主力资金净流出5.34亿元

Group 1 - The aquaculture sector experienced a decline of 1.81% on November 17, with Lihua Co. leading the drop [1] - The Shanghai Composite Index closed at 3972.03, down 0.46%, while the Shenzhen Component Index closed at 13202.0, down 0.11% [1] - Key stocks in the aquaculture sector showed mixed performance, with Fucheng Co. increasing by 2.43% and Lihua Co. decreasing by 3.30% [2] Group 2 - The net outflow of main funds in the aquaculture sector was 534 million yuan, while retail investors saw a net inflow of 297 million yuan [2] - The top stocks by net inflow included Zhengbang Technology with a net inflow of 13.26 million yuan from main funds, while ST Tianshan had a net inflow of 6.55 million yuan [3] - Retail investors showed significant interest in stocks like Zhengbang Technology and ST Tianshan, despite overall negative trends in main and speculative funds [3]