Shrimp why is blue shrimp
Should not be contaminated because of the different varieties, may be sold in the market is farmed prawns, prawns itself is blue. Some individuals of grass shrimp will become very blue. The Guangzhou grass shrimp is called blue shell, most of them are blue. It could be a type of marsh shrimp, which is common in Thailand.
If its feet are blue, it is likely to be Rochester shrimp, which turns red when cooked. It's a bit more expensive than the Keeled Shrimp, with a big head and hard shell, and quite tasty!
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Shrimp blue can be eaten
Professor Ronald of the University of Connecticut, USA, through research, found that the cause of the lobster body blue is: genetic mutation of the lobster produces an excess of a certain protein, which reacts to form a blue compound - astaxanthin. This causes their shells to take on a bright blue color, and in some cases, a brownish-green color.
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Experts say the blue lobster is so rare that it occurs only once in every 2 million lobsters on average. It is a rare marine creature comparable to a living fossil. Because numbers are so low, and because the lobsters' bright blue color makes them easier for predators to spot and hunt. So the chances of catching a blue lobster in captivity are only one in a million.
Expert A: The blue protein in blue lobsters is the shell, not the meat. Blue lobsters are safe to eat. Cooking destroys this protein, though, and there is no difference between a cooked blue lobster and a regular lobster.
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Warm Tips
Check to see if the shrimp is alive. If it is alive, there is no problem. If it is dead, the blue color is normal. If it's normal, you can eat it. If artificially colored, or contaminated, it can not be eaten.