许多金鱼爱好者向我反映,他们自己养的金鱼或者从外地引进的金鱼良种,即使当时应属第一流的精品,但过不了几年金鱼子代的品种特征就出现了退化的趋势。尤其是在2005年我应邀参加“如何提高金鱼品种质量”为主题的研讨会期间,一些金鱼场主直接来询问:“许老,你有些种鱼是从我鱼场买去的二、三等品,可为什么几年后,你的种鱼质量反而远远超过了我们 Many goldfish enthusiasts reported to me that the goldfish they raised or the goldfish introduced from abroad were degenerating even after a few years of being the first-rate boutique. Especially in 2005, when I was invited to participate in the seminar on ”How to Improve the Quality of Goldfish Breeds“, some goldfish farms directly asked: ”Xu Xu, you have some kinds of fish that I bought from my fish farm, Third-class products, but why a few years later, your quality of fish far more than us