you can't eat it.

The surface, gills and intestines of fish, crabs and shrimps all contain a certain amount of bacteria, and the dead fish, crabs and shrimps are prone to spoilage. Therefore, no matter how fish, crabs and shrimps die, they should never be eaten. Fish, crabs and shrimps will rot after death, and dead fish and crabs may also have parasites on their bodies. After eating, people are prone to cross-infection, leading to gastrointestinal diseases, and poisoning may occur.

Freshness of shrimps-

Fresh shrimps are bent. Fresh shrimp has a complete head and tail, which are closely connected with the body. The shrimp body is quite stiff and has certain elasticity and curvature. However, the head and body, shell and meat of stale shrimp are loosely connected, and the head and tail are easy to fall off or separate, which can not maintain its original curvature.

fresh shrimps are bright in color. The colors of shrimps vary slightly with different species. The fresh prawns, Rocky prawns and grass prawns are blue, the shrimps caught in the sea are pink, and the bamboo prawns and metapenaeus ensis have black and white patterns with a slight pink color. If the shrimp has black hair, it is stale shrimp, and the whole shrimp is dark and not bright, which also means it has gone bad. Can't eat

Extended information:

Harm of spoilage products to human body-

Due to serious microbial pollution, spoilage foods increase the chances of the existence of pathogenic bacteria and toxin-producing bacteria, and enable some bacteria with weak pathogenicity to grow and multiply in large numbers, thus causing food-borne diseases after being eaten by people. Histamine, a decomposition product of some spoilage, can cause allergic reactions, and moldy sugarcane can cause acute poisoning. Long-term consumption of food containing aflatoxin and penicillin can often cause chronic damage. < P > Food spoilage decomposes the main components of food, such as protein, fat and carbohydrate, and a large number of nutrients such as vitamins and inorganic salts are also decomposed, destroyed and lost, which seriously reduces its nutritional value and even reaches the level of inedible.

Reference: Baidu Encyclopedia-Corruption and Deterioration

Reference: People's Daily Online-Disease control experts remind the public that dead fish and shrimp can't be eaten

Reference: People's Daily Online-5 taboos for eating shrimp? Teach you to tell the freshness of shrimp.