The specimen lake at greenfield was the first lake to be established 20 years ago, it was designed to hold very big fish with depths to over 12 feet and an area that covers more than 5 rai. The lake has matured over the years into a naturally beautiful and well stocked fishery that provides something from the very serious big fish hunter to the novice who wants to start out.

It is well stocked with huge fish including arapaima, giant Siamese carp and mega sized catfish as well as a host of other species.