Skip to content

Crazy Crab Care

Your New Crazy Crab (Hermit Crab)

Crazy crabs can be long lived pets of up to 10 years old when looked after and all their conditions are met.


A glass or plastic tank with adequate space is great for your Crazy crabs. A tank with a lid is a must to prevent escapees, which happens more often than you may think. Allow enough space for bowls, decorations and for your crabs to dig in the sand. An overcrowded tank may cause the crabs to fight and even eat each other so as a general rule the more room and the taller your tank is, the happier your crazy crabs will be! Remember when selecting your tank and its decorations that your crazy crabs LOVE to climb.

Winter Time

Crazy crabs are from the tropics and don’t tolerate prolonged chills. A heat mat under half of the tank will allow a warm place for the crabs to bury. Being placed on on only half of the tank allows your Crazy crabs to shuffle from cool to warm as needed.

Because Crazy crabs are from the tropics, humidity is also important. A mist from a spray bottle and a sea sponge in their fresh water will increase and maintain humidity within the tank.


There are many ways to decorate your tank keeping in mind that your Crazy crab is a climber. A coconut hut is good for extra insulation and as a secure place for your Crazy crabs to retreat to when they need to feel safe. Coloured sand is available and look great as a splash of colour in your tank.

Spare shells are not only decorative, but are important for your Crazy crabs growth. It is a good idea to have two if not more spare shells constantly available per crab. A new shell generally needs to be ¼ larger than the shell your Crazy crab is currently occupying.


Here at place road pets we have a few different types of substrates to choose from such as shell grit ,coco fiber,aspen bedding and many other sands. The best flooring for your Crazy crabs tank is sand. It is natural and allows the Crazy crabs to bury themselves to keep warm. Generally your Crazy crab should be able to cover their entire shell when buried.

It is important to clean your tank once as week to prevent odours and provide clean sand for your Crazy crabs.  The damp sand becomes polluted with ammonia from your Crazy crabs waste and this can kill your Crazy crab.


There are numerous brands of Crazy crab food available, and Place Road Pets sell a balanced mix containing a large variety of blended goods.. Food should be available all the times, with treats offered regularly. Some yummy treats for your Crazy crab include pears, strawberry, apple, mango, watermelon, cooked fish, cooked chicken, coconut, kiwi fruit, grapes and just about anything(but remember to take out any uneaten foods as this will go rotten)  Try different food to see what works for you and your Crazy crab.

Two large bowls should be provided one with fresh water and the other with saltwater as they use salt water as a way of keeping clean. both water bowls should be freshened once a day as well as there fresh water to drink.