What is the fundamental difference between the aquarist's view of the night and the fisher's view of the night?

For the aquarist, the night is when the ecosystem lives; for the fisher, the night is when the target species gathers.

The text highlights a significant philosophical and practical contrast in how humans interact with shrimp behavior relative to the time of day. For the dedicated aquarist managing a miniature ecosystem, nighttime signals the peak vitality and activity of the community—it is when the ecosystem is truly 'living' and interacting with its resources. Conversely, for the commercial or recreational fisher, the entire purpose of operating at night is manipulative: they seek to exploit the natural tendency of shrimp to gather (often via light attraction) so they can be effectively collected or harvested in large quantities. The shared observation of nocturnal activity serves two entirely different human objectives.