午间涨跌停股分析：79只涨停股、5只跌停股，水产概念活跃，中水渔业2连板，开创国际涨停

Group 1 - A-shares saw a total of 79 stocks hitting the daily limit up and 5 stocks hitting the limit down during the first half of the trading day on November 17 [1] - The aquaculture sector was active, with Zhongshui Fishery achieving two consecutive limit ups and Kaichuang International also hitting the limit up [1] - The lithium mining sector strengthened, highlighted by *ST Zhengping achieving nine consecutive limit ups, Guocheng Mining with four limit ups in six days, and Dazhong Mining with three consecutive limit ups [1] Group 2 - Stocks with consecutive limit ups included Furui Shares and *ST Lvkang with eight consecutive limit ups, Sanmu Group with seven consecutive limit ups, and Renmin Tongtai with six consecutive limit ups [1] - Other notable stocks included Victory Shares with five consecutive limit ups, ST Ruihe with four limit ups in five days, and Jiuzhou Wang and Zhenai Meijia with four consecutive limit ups [1] - *ST Yuanshang experienced two consecutive limit downs, along with *ST Meigu and Aotexun also hitting the limit down [2]