Short answers, pulled from the story.
The Gunditjmara people began raising short-finned eels as early as 4580 BCE. They created a complex system of channels and dams on volcanic floodplains near Lake Condah to manage the eel population and ensure a year-round food supply.
Aquaculture production surpassed capture fisheries in 2014. This historic turning point marked the shift where the industry now accounts for nearly half of all fish consumed by humans with global output reaching 130.9 million tonnes by 2022.
In 1995, the fish-in-fish-out ratio stood at 7.5, meaning that for every pound of salmon harvested, 7.5 pounds of wild forage fish were consumed to produce it. This dependency creates a strain on forage fish populations like herring and sardines.
In 2014, parasites were estimated to cost the global salmon farming industry up to 400 million Euros. This figure represents a significant portion of production value and has driven the industry to turn to vaccines and other disease management strategies.
Approximately 20 percent of mangrove forests have been destroyed since 1980 due to the expansion of shrimp farming. In Indonesia, over four decades of conversion have turned vast areas of mangroves into shrimp farms, many of which are abandoned within a decade.
A single oyster can filter 15 gallons of water a day. This filter-feeding capacity removes microscopic algal cells and extracts nitrogen and phosphorus from the system to improve water quality and restore eutrophic conditions.