Oreochromis Niloticus or White Nile Tilapia are a great addition to any aquaponic system. They are also a great source of gmo free protein. Tilapia serve as a natural biological control for most aquatic plant problems. They grow to 17”in length and 9 pounds in weight. Their max life expectancy is ten years.Fish will be approximately 1.5” in length when shipped. These fish have a cold hardiness of 49 degrees. They will be a mix of males and females.