Halloween Hermit Crab
| Scientific Name | Calcinus sp. |
| Diet | Omnivore; Micro Algae, Scavenger |
| Alt Common Name | Left-Handed Hermit Crab |
| Family | Diogenidae |
| Origin | Hawaii |
| Aquarist Level | Novice |
| Reef Safe | Yes |
| Coloration | Black / Orange |
| Disposition | Peaceful |
| Hardiness | Very |
| Mature Size | 2 inch |
| Reproduction Method | Eggs |
| Sexual Dimorphism | Not Visible |
| Venomous | No |
Notes: This species must molt in order to grow. Generally at
night, it will leave its shell home, lay on its back, and exit its
exoskeleton. A new exoskeleton is excreted and will harden over a period
of several hours. The animal is vulnerable at this time and should not be
disturbed. Proper iodine levels assist with successful molting.