Usually edible crabs that can be bought are not poisonous, but if they are dead crabs, they will produce some toxic substances if they are put for a long time, so they should not be eaten.In addition, some species of crabs are also toxic, such as poisonous scale crab, embroidered ridge ripe crab, upright Aijie crab, pattern Aijie crab and so on, they usually inhabit shallow water areas such as coral reefs, the color is bright, while the shell on the body has particles, the action is also very slow.
1. Crab stomach: The stomach of the crab is its digestive organ. Because it has a very mixed diet, what it eats is also in a mess. There is also the habit of eating decay, so the stomach is not clean and can't be eaten.The stomach is located on the crab cover, and there will be crab eggs on the surface, so it must be separated.
2. Crab heart: After opening the crab cover, there is a layer of black membrane inside. The hexagonal thing under the black membrane is its heart. This part is also inedible. It is best to clean it out.
3. Crab intestine: Like the intestines of other animals, the crab intestine is full of excrement. It is connected to the stomach of the crab. It is a black line, which is easier to find.
4. Crab gills: Crabs live in water, so they breathe with gills. Because they need to filter water, this part is dirty and tastes bad, so don't eat it.Crab gills mainly in its abdomen, is two rows of soft things, relatively easy to distinguish.
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