yes
it depends which kind only a hermet crab if you live by a beach you usually can just go to a suvineir shop and by it if not a pet store
crabs are scavengers in the wild. I am assuming it is a hermit crab you are asking about. There are a number of crab foods you can find at your local petstore.
Hermit Crab
You need to be more specific in what type of blue crab you are referring to. There are at least three different species of crab commonly known as blue crab.Atlantic Blue Crab (Callinectes sapidus)Blue Crab (Portunus pelgaicus)Japanese Blue Crab (Portunus trituberculatus)
The size of ya mam
the blue crab is eaten by us and other blue crabs
Neither. It is not a vertebrate, so it cannot be either. A crab is a crustacean.
click on your pet if it is in your house you will see a blue sponge click it and keep on clicking on your pet to wash it
Get hermit crab food from the pet store.
Sand, or fine gravel on the bottom of an aquarium, or a screen cage is ideal. You need to keep the cage temperature at least at 72 degrees Fahrenheit. The humidity level is best a 70%. The habitat for you hermit crab should have a moist warm feel, this will keep the gills of the hermit crab in check. Keep a spray bottle of fresh water handy and periodically spray your hermit crab habitat with it.
The blue crab is a general term that refers to four different species that share similarities:The blue king crab (Paralithodes platypus)The blue swimmer crab (Portunus pelagicus) The Japanese blue crab (Portunus trituberculatus)The Chesapeake/Atlantic blue crab (Callinectes sapidus)The Japanese blue crab and the blue swimmer crab are the only two that are within the same genus.