1.哨音养鱼法此法是最近日本的水生物专家,研究提出的。他把鱼卵放在实验室中进行孵化后,在每次喂幼鱼时伴以哨音,让鱼逐步养成听到哨音便回到进食地点进食的习惯。然后,再把初步训练的鱼放入大海中,继续进行哨音喂食训练。这样,当捕鱼时只要一吹哨就可把鱼顺利地打上来。2.电照养鱼法最近,由日本水生物专家研究出此法。采用此法养鱼,可使鱼一年产两次卵,并能生产出肉味鲜美的电照新鱼种;同时,还可使鱼的产量提高两倍。例如,鳟鱼和大马哈鱼,在夜长昼短的秋 1. Whistling fish law This method is a recent Japanese aquatic experts, research proposed. He put the eggs in the lab for hatching, accompanied by a whistle every time he feeds the juvenile, so that the fish gradually develop the habit of eating whistles and returning to the eating spot. Then, the initial training of fish into the sea, continue whistle-fed training. In this way, the fish can be put on smoothly when whistling while fishing. 2. Electric fish culture Recently, the Japanese aquatic experts developed this method. Using this method of fish farming, fish can make eggs twice a year, and can produce fresh meat tasty electric species; the same time, the fish can also increase the yield twice. For example, trout and salmon are short in the long, dark days