Identify the correct example of invasive animal species.

The correct answer is Option (3) → African catfish

Alien species invasions are one of the causes of biodiversity loss. A species brought in from outside (on purpose or by accident) may become invasive and harm the native species.

(1) Lantana — Incorrect. It is an invasive species, but it is a weed (a plant), not an animal.

(2) Carrot grass — Incorrect. Carrot grass (Parthenium) is also an invasive weed.

(3) African catfish — Correct. The African catfish Clarias gariepinus was brought in illegally for aquaculture. It is now a threat to the native catfishes of our rivers. It is the only animal among the options.

(4) Water hyacinth — Incorrect. Water hyacinth is an invasive aquatic weed, again a plant.

NCERT Extract:
Loss of Biodiversity – …