主动投怀送抱 南京玄武湖出现群鱼跳跃奇观
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16日上午,南京玄武湖和平门一带出现的奇观惊呆了众多路人,不少鱼儿跃出水面,有的居然蹦上了岸,还主动投怀送抱往路人身上撞。
众多鱼儿竞相跃出水面,一蹦1米多高,像在举行一场跳高大赛……昨天(16日)上午,南京玄武湖和平门一带出现的奇观惊呆了众多路人,不少鱼儿竟然蹦上了岸,还主动投怀送抱往路人身上撞。
[现场]
鱼儿跳高向人投怀送抱
“哗啦哗啦”,昨天(16日)上午10点多,南京玄武湖环湖路和平门附近传来阵阵水声。走近了,记者惊讶地看到,一条条大鱼争着跃出水面,有时甚至几十条鱼一起翻腾,像在进行集体表演,引得游人湖边驻足观望。
“快看,那条鱼跳得多高!”游人看得兴奋不已,鱼儿似乎跳得更欢了,一蹦竟1米多高。记者看到,这些鱼儿个头都挺大,大多数都足有四五十厘米,离岸的距离也很近,路人触手可及,有人干脆就伸手去抓鱼。而有的鱼儿索性直接往岸上跳。一名中年男子想抓鱼,站到通往湖里的一根大水管上,没想到,一条大鱼跃起,竟主动向他投怀送抱,撞到身上来,反让中年男子吓了一跳,脚下一滑掉下了湖。
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群鱼跳出水面。(来源:现代快报)
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鱼儿竟然蹦上了岸。(来源:现代快报)
[专家]
鱼儿群跃原是寻找清水源
为什么湖里的鱼儿集体跳跃?围观的游客也议论纷纷,“也许是天气太热,气压低,以前从没见过这么多鱼一起跳出水面的。”
玄武湖水务所所长朱祝兵告诉记者,其实,气压问题只是原因之一,而更主要的是与最近玄武湖的水位及水质有关。
他介绍,前段时间连续下暴雨,导致玄武湖水位急剧上升超过了警戒线,本来预报上周末将再次下暴雨,为防止内涝,玄武湖提前排水,水位比平时还要低20
厘米,结果很多地方露出浅滩,因此,紧急启动大桥水厂为玄武湖补水,而入湖的进水口,正是在和平门这里,鱼儿有溯水性,喜欢溯流而上;此外,之前下暴雨为了排涝,城市管网里的污水混着雨水一起排入玄武湖,导致水质下降,而这次补进来是清亮亮的水,鱼儿自然喜欢,全都聚集过来,但游到了这里又被进水口处的栅栏挡住了去处,因此,就出现了群鱼跳跃的奇观。
“前几年玄武湖鱼少,当然看不到。”朱祝兵说,这次路人看到的那些大鱼都是鲢鱼,跳跃能力特别强。
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