CATDOLL : CATDOLL: Where are carp, grass carp and silver carp distributed in the reservoir? For example, are crucian carp at the bottom or in the middle?

Let me teach you a little trick. Look at the fish's mouth. The fish's mouth is divided into upper mouth, terminal mouth and lower mouth. The fish with upper mouth mainly eat planktonic plants and animals, so they live in the upper and middle waters. The fish with terminal mouth are generally carnivorous fish, and usually live in the middle waters. The fish with lower mouth usually feed on water plants and bottom debris, or are omnivorous fish, and usually live in the bottom waters.