北欧挪威人对沙丁鱼情有独钟,尤其喜欢吃鲜活的沙丁鱼。然而当沙丁鱼运抵渔港时,存活者寥寥无几。为此,渔民们伤透了脑筋。有一次,有人偶然发现一个抵港鱼舱里的沙丁鱼基本存活,原来是在该鱼舱里混有若干鲶鱼。鲶鱼喜欢四处乱窜乱钻,搅得沙丁鱼不得安生,只好跟着鲶鱼游动。由此,渔民们得到了启迪,在装沙丁鱼的鱼舱里放上若干鲶鱼,解决了沙丁鱼运输途中死亡的难题。这种现象,人们谓之“鲶鱼效应”。 Nordic Norwegians love sardines, especially fresh sardines. However, there are few survivors of sardines arriving in fishing ports. To this end, fishermen hurt their brains. On one occasion, someone accidentally discovered that the sardines in the arriving fish tank basically survived. It turned out that a few catfish were mixed in the fish tank. Cats like chaos around drilling, stirring sardines may not be safe, had to follow the catfish swimming. As a result, fishermen were enlightened and put some catfish in the sardine’s fish tank to solve the problem of dead sardine transport. This phenomenon, people call the “catfish effect.”