What animals does Jiangnan represent?

Jiangnan stands for fish. When it comes to Jiangnan, of course, the first thing people think of is that there is a lot of rain in this place, and there are rivers and ponds everywhere, so there are a lot of fish, and the area that Jiangnan now refers to is the lower reaches of the Yangtze River and this part of the area south of the lower reaches of the Yangtze River is collectively called Jiangnan. There is another particularly pleasant name for this place, which is Jiangnan Water Town. Because there are many rivers here, it will certainly rain where there are rivers, so it is also known as the land of fish and rice. So when it comes to Jiangnan, rice and fish are more representative, so what animals does Jiangnan represent? If analyzed from this angle, it should represent fish.