如何从鱼鳞判断金鱼的年龄

如何从鱼鳞判断金鱼的年龄

金鱼（详细介绍）

金鱼不像狗和猫，可以通过看牙齿来判断它们的年龄。一般来说，我们可以通过观察金鱼的鳞片来大致判断它们的年龄。这里有三种方法教你如何从鱼鳞上看金鱼的年龄。1、鱼鳞厚度分布：在生命的第一年，大多数鱼都会被细小的鱼鳞覆盖。这些鳞片将由许多不同的鳞片组成，它们看起来像一个截头圆锥。中间较厚，边缘较薄，顶层最小，但最古老；底层最大，但最年轻。2、鱼鳞大小：当鱼年轻时，鱼鳞会看起来年轻而小，数量也会相对较少。当鱼生长缓慢时，它的表面会有新的鳞片。薄片的数量会随着鱼的年龄而增加。因此，年龄越大的鱼，鱼鳞就越厚、越硬

3、脊椎盖耳石：除了看鱼鳞，还有其他方法可以看出鱼的年龄。我们还可以通过观察鱼的脊椎、鳃盖、耳石等来判断鱼的年龄。当然，判断方法类似于观察鱼鳞，即利用不同生长时期形成的“生长环”和“特征”来确定鱼的年龄

How to judge the age of goldfish from its scales

Goldfish (detailed introduction)

Goldfish, unlike dogs and cats, can judge their age by looking at their teeth. Generally, we can roughly judge their age by looking at the scales of goldfish. Here are three ways to teach you how to see the age of goldfish from the scales. 1、 Scale thickness distribution: In the first year of life, most fish will be covered with tiny scales. These scales will be composed of many different scales, which look like a cone with a truncated tip. The middle is thick, the edge is thin, and the top layer is the smallest, but the oldest; The bottom layer is the largest, but the youngest. 2、 Scale size: When the fish is young, the scales will look young and small, and the number will be relatively small. As the fish grows slowly, there will be new flakes on its surface. The number of flakes will increase with the age of the fish. So the older the fish, the thicker and harder the scales will be

3、 Spinal operculum otolith: There are other ways to see the age of fish besides looking at the scales. We can also judge the age of a fish by looking at its spine, gill cap, otolith, etc. Of course, the judgment method is similar to the observation of fish scales, which is to determine the age of fish by using the "growth rings" and "characteristics" formed during different growth periods