Why it's called the Sturgeon Moon:
"While the Full Moon names in common use today originate from North America, a huge variety of names were used by indigenous cultures both across North America, Europe and around the world."
"It’s perhaps no surprise then, that the name Sturgeon Moon – or as it’s evolved in modern media, the Sturgeon Supermoon – derives from the fish that was once plentiful in rivers and lakes at this time of the year."
"Particularly abundant around the Great Lakes along the border between the United States and Canada, the freshwater lake sturgeon was an essential food source for the Native American Algonquin tribe"
BBC Science Focus.