The pale referred to in the idiom is usually taken to mean the English Pale, the part of Ireland under English rule, and therefore, as perceived by its rulers, within the bounds of civilization. pale see: beyond the pale
For the food, see Salmon as food. The chum salmon (Oncorhynchus keta) is a species of anadromous fish in the salmon family. It is a Pacific salmon, and may also be known as dog salmon or keta salmon, and is often marketed under the name silverbrite salmon.
Ketogenic diets force your body to adapt to using fat for fuel when glucose (from carbs) is not present, this is known as ketosis. Ketones are a by-product of ketosis and keto sticks (also known as ketostix or ketosticks) are urine testing strips which detect the presence of ketones in the blood. They are small plastic strips with an absorbent pad on the end, you urinate on the absorbent pad and it changes colour to reflect the amount of ketones present in your urine.