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Hermit Crab

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Traits & behavior

Omnivores
Land hermit crabs eat both animal and plant matter.

Non-aggressive
These docile pets will allow themselves to be handled. They will not pinch unless they feel threatened. Hermit crabs are social and can be kept in groups.

Molters
This means they need to shed their outer skin in order to grow.
 

Things to remember

Never drop
A hermit crab's abdomen is very soft. Dropping them onto a hard surface will cause severe injuries or death.

Protection
After molting, crabs are extremely vulnerable because their bodies are soft and pliable. Isolate them from other crabs during this time.

Safety & cleanliness
Please remember that all pets may bite or scratch, and may transmit disease to humans. Keep your pet's home clean and wash your hands before and after handling your pet or cleaning his home. Infants, young children, pregnant women, people with compromised immune systems, and the infirm or elderly are at greater risk of infections and should use caution when in contact with the pet or its habitat. Consult your doctor for more information.
 

Nutrition

Staple diet
Some crabs' claws are not big enough to grab on to pellet-type food. Therefore, you should feed them one teaspoon of prepared food in powdered form. If pellets are the only available option, crush them into powder.

Fresh foods*
To boost your crabs' overall health, supplement their diet with fruits and vegetables, such as chopped apples, grapes, bananas and dark green leafy veggies like kale and broccoli florets.

Slow eaters
Land hermit crabs take small bites and eat very slowly, usually at night. It is recommended that you place fresh foods in their tank at night, but be sure to remove them in the morning.

Water
Be sure to use an aquarium dechlorinator to remove chlorine from their water.

Water containers
The right drinking water container is very important to the health of your crab. Since land hermit crabs are extremely sensitive to metal, be sure yours is a non-metallic, non-porous container. Also, be sure your container is not too deep as they like to drag themselves into the water dish and just sit. If you have both large and small crabs, place a natural sea sponge in the middle of the dish so there is something for the smaller crabs to grab on to should they stumble in and be unable to get out.

Every other day
Change your hermit crab's staple food and water every other day and clean the containers, even if the dish or bowl looks full.

*Remember that fresh food items require their own dish and should be removed from the habitat the morning after the night they are fed in order to prevent spoilage.

Environment

Aquarium
A good rule of thumb is one gallon of habitat space for every two crabs. Be sure there is enough room in their habitat for them to move around without constantly stepping on each other.

Tank lids
Use a tight-fitting lid to prevent your hermit crabs from escaping.

Décor
Provide the crabs with a hiding shelter to sleep in during the day.

Temperature
Day and night temperatures should range between 70-75° F. Use an under tank heater on one side of the habitat to maintain this temperature in cool environments.

Humidity
Habitat humidity should stay between 70-80%.

Bedding
Place 2"-3" of clean gravel or sand on the bottom of your tank. Be sure there is always at least one inch of substrate over the under tank heater, if used, to protect the crabs from the heat. Coconut bark can also be used and can help retain humidity.

Shells
Provide at least two larger extra shells of varying sizes for your crab. Do not be alarmed if your crab changes its shell as often as every two days.

Lighting
Hermit crabs do not require aquarium hood lights. Normal room lighting 10-12 hours per day is sufficient.

Aquarium placement
Place your aquarium in a low-traffic area, away from direct sunlight and drafts.

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