Notes: Provide the Purple Lobster with a deep sand bed and numerous rocks where it can construct its burrow. A hiding place is especially important after molting while the Lobster must wait for its new exoskeleton to harden. Constructing a cave near the front of the aquarium will improve your chances of seeing the lobster during the day as it will spend most of the daylight hours hiding in its burrow.
Purple Lobsters will not bother corals, but may harm small passive reef fishes and some smaller invertebrates. They are highly territorial and are best kept singly. Two or more will often fight unless they are a mated pair. They grow to a maximum size of five inches in the wild, but should not grow as large in an aquarium.
The lobster is a carnivore and a great scavenger. It will help to keep your aquarium clean by eating excess food left over by the fish.