River shrimp will eat river shrimp. Although they are all of the same kind, the underwater world is all natural selection, and the fittest survive. When food is insufficient, prawns will eat shrimps.

White shrimp is only produced in the waters near China. Adult shrimps are 4-9 cm long. There are obvious longitudinal ridges in the center of the back of the third to sixth abdominal segments, hence the name. The ridge tip at the base of the upper margin of the frontal angle is shorter than the tapering part at the end, and there are extra small teeth at the end. Step 2: The knuckle length of the foot is about twice as long as that of the palm, and the palm is about as long as the wrist. Living in shallow water or near estuaries with sediment bottom, the suitable salinity is 6.8-30.4.