An indicator is a substance that changes colour in the presence of another substance.  Let say inside the beaker are substances of both glucose and starch. The glucose and st â¦ arch are of same colour.
How long will dwarf shrimp live? Most dwarf shrimp live between 1.5 and 3 years. There are some very long lived shrimp, such as the ope ula (Hawaiian Red Shrimp). This shrimp can live beyond 20 years in captivity. How big will dwarf shrimp get? Most dwarf shrimp stay between 1.5 and 2.5 inches.
If you've bought frozen shrimp in their original packaging, the packaging will often have a Use-by or Best before date on it. That's the vendor's estimate of how long your shrimp will retain their best flavor and quality. Usually it will be 4 to 6 months for uncooked shrimp, or about half that for cooked. You can still eat them after that time -- they'll be safe for as long as they stay properly frozen -- but their texture will suffer, they'll begin to acquire off-flavors from the freezer, and eventually they'll succumb to freezer burn.