According to the published information, there are many river-blocking nets for fishing, among which Zhang net is suitable for large rivers with a water depth of at least 20 meters. The secondary network is suitable for medium-sized rivers, and the water depth is between 6 ~15m. Barbed wire is suitable for small rivers with a water depth of 2 to 5 meters. So this river with a width of 10 m and a depth of 2 m uses barbed wire for fishing.
River-blocking net is a special fishing net. There are two river blocking networks in the river, and a passage is formed between them. The bottom edges of the river blocking nets are respectively connected with the river blocking nets to catch all passing fish.