The Cleaner (Piranhadactylasaurus)

The Piranhadactylasaurus  a k a "The Cleaner",

a hybrid of the prehistoric Megapiranha and Pterodactyl,

was created for the sole purpose of keeping the park's restricted pool clean.

Anything that falls into the pool is immediately cleaned to the bone.

The Cleaner's ability to fly just above the water (similar to a flying fish)

enables it to quickly overtake any fast moving trespasser

before taking it to the bottom where it cleans while feeding.

P.S. "They travel in herds". 

Please note: The 4 blue bricks under the dinosaur are just the stand 

                      (I probably should have used white bricks)