鱼儿每天在耳朵里记日记随便一条鱼,如何确定它的年龄?根据它的大小判断?例如一岁大的金枪鱼与一岁大的鲸鱼是没法比的,因此根据鱼儿的身体大小很难估测它的年龄。告诉你两个巧妙又简单的办法:鱼儿的鱼鳞和耳石像树的年轮一样,有一圈一圈的轮线,数一数这些年轮,就可以确定鱼儿的年龄了。更绝的是,在显微镜下观察,鱼儿的耳石每一天都会有一条标记,好像鱼儿每天都要 How to determine its age? According to its size to judge? For example, a year-old tuna fish and one-year-old whale is unmatched, so according to the fish’s body size is very Hard to measure its age. Tell you two clever and simple ways: the fish’s scales and otoliths, like the tree’s rings, have a circle of wheels, count the number of these annual rings, you can determine the age of the fish. Even more insidiously, under the microscope, the fish’s otoliths have a mark every day, as if the fish had to be on a daily basis