If you are allergic to fish, no.
In your local area there is the Asthma & Allergy Foundation of America of Maryland. It is a non-profit organization that serves as a resource for people with allegies.
by pinching people's butts
There are different websites available online in which you can purchase a giant crab. First, it depends on if you want a real giant crab to eat, or if you want an artificial giant crab to play with or for decoration. A few websites that sell giant crab to eat include Alaska Seafood Online, Giant Food Stores, and Alaska Seafood Market.
People buy organic food because they do not want GMOs, artificial preservatives and additives, pesticides, and other harmful substances in their food.
Most real and pure crab meat is truly zero carb food. Beware of artificial crabmeat, however, as sugar is used to make it taste like crab meat. It also seems that dungeonous/dungeness crab has some carb count so a low-carber will want to avoid that in any large amount and avoid the artificial crabmeat completely. http://www.carb-counter.org/fish/search/%20crab/1500 http://www.carb-counter.net/fish-shelfish
crab and eel
Yes
Hermit crabs are scavengers so in the wild they will climb trees to eat insects and will eat fallen fruit from trees. in captivity you should have a food bowl and change the food once a day. the food you should be fruit and veggies.
No are you trying to kill it
Get hermit crab food from the pet store.
seafood
Give it food.