How to guard against theft by raising fish in reservoirs?

Farms are generally large in area, so theft prevention is a big problem, especially for the more expensive breeds. If the budget is not much, you can pull some barbed wire and add a monitor. If you want to have a good effect, install an infrared alarm, which will not harm the human body at the same time. There are some anti-theft solutions in my space to see if they are suitable for you. The anti-theft equipment is important, applicable and useful, and then the cost performance. It's a little useful to have a dog, but the effect is not good. If a little thief dog bites the thief, he will have to pay for it. If a big thief comes, he may steal all your dogs together.