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Hermit Crab Care Sheet

HERMIT CRAB
Hermit Crabs can make fascinating pets that
are hardy when kept in the proper conditions.
Most Hermit crabs kept as pets are the Atlantic
Hermit Crab, also known as the Tree Crab. These
crustaceans inhabit coastal areas of Central and
South America. They are social creatures that can
sometimes be found in very large numbers while
scavenging for food at night. Hermit Crabs can
grow up to 4 inches and do well as pets when a
few basic needs are met.
  • Common Name: Hermit Crab
  • Scientific Name: Coenobita spp.
  • Distribution: Throughout Central and
    Northern South American, Caribbean and
    surrounding Islands
  • Size: 2″- 6″
  • Life Span: 10 yrs+
HABITAT
  • A 10 gallon terrarium is
    sufficient for up to 6
    small (<2″) Hermit
    Crabs, while larger
    crabs (3 ½”+) will
    need a 20 gallon
    terrarium and can
    be housed with
    3 or 4 crabs.
  • Hermit crabs are social
    animals; however they
    should not be crowded
    when being kept in
    captivity.
  • Zoo Med’s Naturalistic
    Terrarium or
    ReptiHabitat
    enclosures are a
    great choice for
    Hermit Crabs.
HEATING
  • Daytime Terrarium
    Temperature 78-83 F.
  • Nighttime Terrarium
    Temperature 68-73 F.
  • Zoo Med’s Hermit Crab
    Heater is an excellent
    choice to provide
    supplemental heat to
    your Hermit Crabs.
  • Nightlight Red Heat
    Bulbs are a great choice
    to provide night time
    heat and provide just
    enough light for viewing
    their interesting
    nocturnal activities.
SUBSTRATES
  • Hermit Crabs will need a
    deep layer of substrate to
    burrow in. We recommend
    having at least 3″ of
    substrate throughout
    half of the enclosure.
  • Mix 2 parts Zoo Med’s
    Hermit Crab Sand with
    1 part Hermit Crab Soil
    (coconut bedding). This
    combination will create
    an ideal layer of substrate
    that will hold humidity
    and allow for natural
    burrowing behaviors.
WATER
  • Water is critical to the health
    and success of keeping Hermit
    Crabs in captivity.
  • Hermit Crabs have gills similar
    to those of fish; this adaptation
    requires high humidity levels
    in your terrarium (70-90%
    relative humidity).
  • Spray your Hermit Crab’s
    enclosure daily.
  • Hermit Crabs will need two
    different water bowls with
    constant access to both fresh
    and saltwater.
  • Zoo Med’s Drinking Water
    Conditioner should be used for
    removing chemicals such as
    Chlorine and Chloramines. Use
    Zoo Med’s Salt Water Conditioner
    to turn tap water into saltwater.
NUTRITION
  • Hermit Crabs are
    omnivorous scavengers
    that will eat a wide
    variety of foods.
  • Zoo Med provides three
    basic food items that will
    make up a balanced diet
    when fed regularly.
  • Zoo Med’s Hermit Crab
    Food and Fruit Salad
    are a good choice for
    daily feedings.
  • We recommend mixing Zoo
    Med’s Canned Hermit Crab
    Food with pelleted foods for
    a well balanced meal.
TIPS
  • Provide plenty of
    climbing branches
    and a secure lid
    because Hermit
    Crabs love to climb!
  • Hermit Crabs will
    outgrow their shells
    and are always on
    the search for their
    next home. Keeping
    Hermit Crabs
    successfully
    requires keeping
    several extra shells
    that are larger than
    the current shell being used.
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