養殖場の魚には、適切な時間に適切な量の餌を与える必要があります。

READING

Fish at aquaculture farms must receive the right amount of food at suitable times. If workers provide too little, the fish may grow slowly. If they provide too much, uneaten food sinks and pollutes the water. Careful timing can be difficult to achieve consistently by hand. Automatic feeding systems are now being introduced. Sensors and cameras observe the fish, while computer programs decide when and how much food to release into each part of the farm.

Supporters believe these systems are beneficial. By responding to the behavior of fish, they can provide food only when the fish are ready to eat. This means less food is likely to remain uneaten and go to waste. There is another advantage. Workers do not need to feed every group by hand several times a day. They can spend more time checking fish health, cleaning equipment, and dealing with other important tasks that require human judgment.

Nevertheless, critics have concerns. Sensors may give incorrect information when water is cloudy, and feeding equipment can stop because of power failures or mechanical problems. If workers do not notice these problems quickly, fish may receive too much or too little food, which could slow their growth.