Alligator gar
Ray-finned euryhaline fish related to the bowfin in the infraclass Holostei / From Wikipedia, the free encyclopedia
The alligator gar (Atractosteus spatula) is a species of freshwater fish belonging in the genus Atractosteus that is closely related to the bowfin. Their common name was derived from their resemblance to the alligators. These gars are often referred to as living fossils.
They have become an invasive species in Mainland China, where it can be purchased as an exotic pet fish. On September 4, 2009, an 3 ft 3 in (0.99 m) alligator gar was found in Tak Wah Park in Tsuen Wan, Hong Kong. Officials with Leisure and Cultural Services removed all the alligator gar from the ponds because they were concerned they would harm children.