1. The depth of water should be 12~14cm, not too deep, not too shallow; the cultivation of chili crabs should pay attention to the depth of the water body. Chili crabs can't be cultured in deep water, but the water body can't be too shallow. Generally it needs to be controlled between 12-14cm, which is more suitable for the survival of chili crabs.2. The culture tank needs to be covered with a layer of mud and sand, and the sink wood is ready for it to climb; chili crabs are timid, like to hide in mud and sand, and are afraid of sunlight. When raising them, they need to put some mud and sand at the bottom of the culture tank to give the chili crab a place to hide. Occasionally, chili crabs need to touch the water surface for air exchange, so they need to place heavy wood in the tank so that they can climb and rest. 3. The breeding density is 5 per 30 liters of water; chili crabs should not be bred at too high a density. Generally, you can raise 5 pepper crabs per 30 liters of water, and it is better to raise less than 20 crabs per 100 liters of water. If the feeding density is too high, there may not be enough oxygen in the aquarium, affecting the survival rate of the chili crabs.4. Don't mix with fish to avoid being attacked when changing shells; the crabs are too small to be kept with aggressive fish, especially during its shell changing period when it is defenseless and will only become food for the fish, so try not to mix with fish. If you want to make your aquarium less monotonous, you can keep smaller and gentler fish.5. Change the water once a week to maintain the water quality; Keeping chili crabs usually requires changing the water once a week. If the water is cloudy due to overfeeding, change the water in time. When changing water, you should also pay attention to the fact that it is not advisable to change the whole tank of water at one time, and it is appropriate to change a quarter of the water each time. Although the native environment of chili crabs is in seawater, artificial culture does not require salt and can also live in freshwater.6. You can feed algae or plentiful shrimps. To feed chili crabs, you can feed some algae or Toyon shrimp, or you can mix it with meat and vegetables. You can eat aquatic plants and meat, but not cooked meat. Usually feeding once in two days is enough, feeding a small amount each time to avoid too much food residue.