Lungfish:
Is that the imported thing that's been in Maryland's waterways that is eating everything in sight and can crawl across ground to new waterways?
No, that was the snakehead.
No, that is the vietnamese snakefish (which tastes good, a delicacy in SE Asia). The lungfish can be bought for a personal aquarium, but leave space at the top, even though it is a fish, it breathes air from the surface to live. A fascinating species.