shrimps, crabs, lobsters, water fleas, and relatives. Crustaceans are arthropods , related to insects and myriapods. They are the most diverse animal group in underwater habitats. Only a few crustacean groups have evolved the ability to live on land, and like amphibians, these terrestrial crustaceans still need water or damp places to live.
The drug detection times for Xanax or any other Benzodiazepine in a urine drug test can be as long as 6 weeks depending on your use level. There are a multitude of combinations of drugs that can be on any given test and Benzodiazepines can potentially be on any one of them.
That is, after this length of time, one half of the taken dose is still present in your system. After another 6 to 12 hours, a half of this half is still present, and so on. How long Xanax will stay in your system cannot be predicted for sure. It depends on the system, different people respond in different ways.