Is the climate proverb "Fish scales in the sky never rain" contrary to "Fish scales in the sky, no need to turn over grain in the sun"? Why?

In the beautiful sky, sometimes we can see fish scale clouds.

Some fish scale clouds are small white pieces with silky luster and no shadow, as if you can cover a fish scale with one finger by straightening your arm. Scales are arranged in rows in the sky, like fine scales regularly arranged on crucian carp. From the ground, they look like microwave ripples caused by a breeze blowing over the water. This small scale cloud, called cirrocumulus in meteorology, was transformed from cirrus clouds and cirrostratus under the condition that the upper air layer was very unstable. Once there is a fish-scale cirrocumulus in the sky, the clouds are constantly thickening and lowering, and the weather will turn into rainy days, so there is a weather proverb that "it doesn't rain when the fish-scale sky is crazy".

There are also fish scale clouds, which have distinct layers and are arranged in waves or dense clouds with water waves. Clouds are big, thin clouds are white, thick clouds are dark gray, and there are some gaps between clouds that can penetrate sunlight. This large-scale cloud is called translucent cumulus cloud in meteorology. This fish scale cloud is a sign of sunny days. After the appearance of this fish scale cloud, the weather in this area has been generally sunny and hot recently, so there is a saying among the masses that "the carp in the sky need not be turned over."