Veterinary III CFE Practice Exam

Invasive species are non-native organisms that establish themselves in a new area and spread, often causing harm to native ecosystems, economies, or human health. In marine environments, the lionfish stands out as an invasive example because it has been introduced to the western Atlantic and Caribbean waters where it rapidly preys on a wide range of small fish and invertebrates, reduces biodiversity, and lacks natural predators in that region. Its high reproductive rate and broad diet allow it to spread quickly and dominate reef communities.

The other creatures listed are native to many parts of the world and are not considered invasive in this context. Dolphins, sea turtles, and whales are naturally occurring residents or migrants of marine ecosystems and are generally protected species rather than invasive ones.