Complex sentence: 'Sashimi Grade' fish is caught by individual handline, and as soon as the fish is landed, its brain is pierced with a sharp spike, killing it instantly, then placed in slurried ice.
Split into simpler sentences: 'Sashimi Grade' fish is caught by individual handline. As soon as the fish is landed, its brain is pierced with a sharp spike; and it is placed in slurried ice.