3.5%), but the upper breeding limit is at 2.9%.[1] The redbelly tilapia also can live in a wide range of water temperatures, but in the northern part of its range it sometimes falls below its requirements (minimum 6.5–13 °C [43.7–55.4 °F], depending on a range of factors), resulting in large numbers dying.[9] In Alabama, it was necessary to introduce them each year to maintain a population, as they die during the winter.[2] The upper limit typically is 36 °C (97 °F), but it can survive to 42.5 °C (108.5 °F).[3]