A koi fish is rich in symbolism. In many cultures, it represents good fortune and prosperity. The bright colors and graceful movements of koi fish are seen as signs of a vibrant and successful life.

In terms of love and relationships, as mentioned before, a pair of koi fish can symbolize a happy and harmonious marriage or a strong bond between two people. Their synchronized swimming and close - knit presence are thought to mirror the unity and mutual understanding that a loving couple or good friends should have.
From a spiritual perspective, koi fish are also associated with perseverance and transformation. They can survive in various water conditions and still thrive. Their growth from a small fry to a large, beautiful fish is seen as a symbol of personal growth and the ability to overcome difficulties and evolve into a better version of oneself.
In addition, in some traditional art and literature, koi fish swimming upstream against the current is a powerful symbol of determination and the pursuit of goals. It shows the spirit of not giving up, even in the face of obstacles, and striving to reach a higher place or a more desirable state.