What might happen to a local fish species if AIS are introduced into their habitat?

When aquatic invasive species (AIS) are introduced into a habitat, they often disrupt the existing ecological balance. The local fish species may find themselves in competition for resources such as food, space, and breeding sites. AIS frequently have characteristics that allow them to outcompete native species, such as faster growth rates, higher reproductive capacities, and fewer natural predators in the new environment. As a result, the native fish may struggle to survive and reproduce, leading to a decline in their populations. In severe cases, this can result in the local species facing extinction, especially if they are unable to adapt to the changed conditions or if they rely on specific ecological niches that the AIS now occupy. Therefore, the introduction of AIS poses a significant threat to the survival of local fish species, which is why facing extinction is a valid concern.