Small crabs need to choose soft foods, including cooked egg yolk, steamed bread crumbs, vegetable crumbs, fruit crumbs, broken fish and shrimp, etc., and can be softened with water first if necessary. Small crabs can also eat aquatic plants and algae, such as kelp, Elodea, Vallissima, duckweed and so on. Chop the algae into paste before feeding, and then pour it into water to feed the crabs.
In addition, small crabs can also eat soybean milk, which can be fed with feed 2-3 times a day and at a fixed time. Because these foods are easy to destroy the water quality, you can change a small amount of water every time the small crabs finish eating.
In the season when the water temperature is low, the feeding ability of crabs will decrease, the number of feeding times per day can be reduced appropriately, and the feeding amount can be adjusted, so as to feed them at the moment when the temperature is high.
Living habits of small crabs
1, foraging
Crabs spend most of their time looking for food. They are generally not picky eaters. They can eat all the food they can get with their claws. Small fish and shrimp are their favorite, but some crabs eat seaweed, even animal carcasses and plants.
2. Competition
Crabs eat other animals, and other animals may also eat crabs. For example, humans regard crabs as delicacies, and waterfowl also eat crabs. Some fish also like to eat crab feet like humans. Young and underage crabs may be preyed by other marine life when they float in the sea in groups, so crabs have to lay a lot of eggs when laying eggs to ensure the survival rate of crabs.
3. Reproduction
They rely on the mother crab to give birth to small crabs, and every time the mother crab will lay a lot of eggs, the number can reach more than millions. After these eggs hatch in the abdomen of the mother crab, the larvae can leave the mother and float around with the coastal current.