挪威一家远洋捕捞公司发现存放在水槽中的沙丁鱼不喜欢游动，而半死不活的鱼和冷冻的鱼一样丧失了鲜味。直到几年后，他们才解决这个难题，办法其实很简单：在每个水槽中放进一条鲶鱼，原本懒洋洋的沙丁鱼一看见鲶鱼。立刻感到威胁，为避免被鲶鱼吃掉而迅速游动起来，于是整个鱼槽都被“搞活”了。 A Norwegian offshore fishing company found that sardines stored in sinks did not like swimming, while dead fish lost flavor like frozen fish. It was not until a few years later that they tackled the problem, which was actually very simple: put a catfish in each sink, where the lazy sardines once saw the catfish. Immediately threatened, in order to avoid being quickly eaten by catfish swimming up, so the entire fish tank have been “invigorated.”