Passage: As a member of the tree frog family, the green and golden bell frog spends much time basking in the sun on vegetation, rocks, and reeds, usually near water, or hopping around between such places. Unlike most frog species, it is often active during the day. When handled, this species secretes a slimy acrid mucus, which consists of 17 aurein peptides. Thirteen of these show broad-spectrum antibiotic and anticancer activity. The secretion makes the frog slippery and hard to grip, and is poisonous to some other species of frogs, so it is a useful defensive tool for green and golden bell frogs. Males often fight one another if they come within 1 m of each other, frequently leading to injuries.The green and golden bell frog has been detected in a wide range of habitats. It is generally associated with coastal swamps, wetlands, marshes, dams, ditches, small rivers, woodlands, and forests, but populations have also been found at former industrial sites (for instance, the Brickpit). It has even been found in human vessels such as bathtubs. The requirements of its habitat have been difficult to determine, for it has been found in a wide range of water bodies except fast-flowing streams. It is most typically found in short-lived freshwater ponds that are still, shallow, unshaded, and unpolluted, and it tends to avoid waters that contain predatory fish, whether native or introduced. However, it is most often found in areas that have been affected by human habitation. The frog prefers water bodies that support emergent vegetation, such as reeds and bullrushes, for basking, and winter habitats consist of available shelters around the breeding site, which can be vegetation, rocks, rubbish, or human debris and discarded building materials. Grassy habitats are usually close at hand to provide suitable terrestrial feeding grounds. It prefers waterways with a substrate of sand, rock, or clay, and can tolerate a wide range of water turbidities, pH and oxygen levels, and temperatures, although these can hamper physical growth....

Question: at what level of salinity will tadpoles start to be negatively effected?
8 ppt or higher