Impacts

Biodiversity impact

Tilapia cage culture in Minanjau Lake, Indonesia.

Alien species have been identified as one of the most significant threats to aquatic biodiversity.
They may adversely affect ecosystems and their biodiversity especially through:

Socio-economic impact

Tangail, Bangladesh.

The introduction of species is an established means to increase productivity, also used by rural and poor communities, and generate income in aquaculture and capture fisheries.

However, alien species may also cause socio-economic disruption. Especially through undesiderable change in the nature of the fisheries or in the access to aquatic resources.