What might happen to a native fish species if an introduced fish species that ate the same food was released in a pond?

If an introduced fish species that consumes the same food as a native fish species is released into a pond, it could lead to increased competition for resources. The native fish may struggle to find enough food, potentially resulting in decreased growth rates and reproductive success. Over time, this could lead to a decline in the native fish population, and in severe cases, could result in local extinction if the introduced species becomes dominant. Additionally, changes in the ecosystem dynamics can occur, affecting other species and overall biodiversity.