In China's traditional view of dream interpretation, dreaming of fish has always been closely related to wealth. People who dream that their younger brother catches fish will have a windfall in the near future.
Fish is the floorboard of aquatic vertebrates with variable temperature. The whole body is covered with bone scales, and it feeds on the upper and lower jaws through gill breathing, tail and trunk swinging and coordinated fin swimming. Solemnly declare: the answer is for reference only, please don't be blindly superstitious.