已經講過, 國內所謂既小龍蝦, 其實係美國南部既crayfish.  養殖於農場水溝中, 殺稻田內昆蟲幼蟲一流.  原本早二三十年前引入中國係因為中國有人發覺小龍蝦可以清理污水, 近日連wiki上有關小龍蝦污水處理一文完全空白.  明顯有關當局已將該文章刷掉, 因為好多人誤解清理污水等同清理重工業污染.  不過國內水質一直好多問題, 而淡水有殼類動物本身吸收毒素又比魚類多, 大多數根本唔可以作為食用.  大閘蟹唔同在生態環境要求高, 非普通水塘能養殖.

引用:

原帖由 oneout 於 2008-10-8 05:15 發表
Crayfish or Claw fish is a dangerous creature in clear water in Canada, if anyone who has seen it should report to the Environment Dept.

Crawfish, not Claw fish.  and it's only dangerous because it quickly overpopulates in irrigation ditches and is a danger to freshwater fish habitats.  This has nothing to do with the quality of crayfish meat.  Similarly, chinese carp is also agressively taking over many rivers and lakes in North America it's now deemed as a pest.

"However, in some countries, due to their habit of grubbing throughbottom sediments for food and alteration of their environment, theydestroy, uproot and disturb submerged vegetation causing serious damageto native duck and fish populations. In Australia there is enormousanecdotal and mounting scientific evidence that introduced carp are thecause of permanent turbidity and loss of submerged vegetation in the Murray-Darling river system, with severe consequences for river ecosystems, water quality and native fish species."  -- from http://en.wikipedia.org/wiki/Carp

引用:

原帖由 b4321 於 2008-10-10 13:44 發表
Just type 小龍蝦 in google, and u will find there are many articles that warn u not to eat this kind of food.

小龍蝦 is used to clean up metallic and chemical waste.

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no.  i already explained..."因為好多人誤解清理污水等同清理重工業污染."  dirty water does not equal industrial chemical water.  their gills can absorb a lot of filth, but they cannot absorb enough heavy elements to be of any use in cleaning industrial waste. there are some organic chemicals which can first be broken down by bacteria, then the bacteria could be absorbed, but this is mostly to do with petroleum related waste, again, not heavy elements.

if you know the crayfish is from a safe harvest, it's quite delicious, however, eating the head(where all the organs are) is still too risky, like 大閘蟹, even after cooking, the gills are extremely dirty and cannot be cleaned properly.

i like eating crayfish also, but prefer not to in China because you don't know where it's bred.  similarly, older japanese do not eat raw Katsuo(bonito) or Sake(salmon) for similar reasons, because they're half-freshwater and half-saltwater fish, returning to freshwater to breed, they're naturally more susceptible to bacteria infestation.  but thanks to us Chinese eating everything like locusts, and now even in Japan, many places serve raw salmon, and it's one of the cheapest fish in sushi shops in Hong Kong.  There are limitations in freezing fish that will lessen the chance of food poisoning, but how sure are you where those sushi places get their fish?

http://findarticles.com/p/articl ... 11_v20/ai_n18607576

shrimps are even smaller...   

你係求期回應定係未食過蝦....

唔好飲咁多酒, 唔好食咁多煙, 少D食鹽同味精, 過半年再同我講啦.

蝦冇味...