The number of underwater aquaculture cameras required for fish farming is not fixed. It mainly depends on the breeding scale (such as pond area, number of cages), monitoring needs (such as full-coverage observation, key area monitoring) and equipment functions (such as single-device monitoring range, whether it has a cruise function), and there is no unified standard.

• Small-scale farming (e.g., a single pond of less than 5 mu, 1-2 cages): 1-2 cameras are sufficient to cover key locations such as the main feeding area and water outlet.
• Medium-scale farming (e.g., a group of ponds of 5-20 mu, 3-10 cages): 3-5 cameras are needed to ensure independent monitoring of different ponds/cages and avoid blind spots.
• Large-scale farming (e.g., ponds of more than 20 mu, more than 10 cages or industrial aquaculture workshops): Usually, more than 5 cameras are required. In some cases, multiple cameras are combined with a central control system to achieve full-area monitoring without dead ends. Some also need to be equipped with movable cameras (such as underwater robots) for supplementary monitoring.

In addition, if it is necessary to monitor details such as fish behavior and growth, the density of cameras may need to be increased; if the equipment supports 360° rotation or a wide monitoring range, the number can be appropriately reduced.

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