Shameface Crabs
From Microcosm Aquarium Explorer
These burrowing crabs prey on snails with their large flattened claws. Scott W. Michael
[edit] Overview
Calappa species are easily identified by the large, flattened claws that are held in front. These make them appear as though they are hiding behind the claws in “shame”—hence the common name. They prey on snails—their claws are very well designed for the destruction of snail shells. One claw holds the shell and the other is used to open it like an old-fashioned can opener. They also use their claws to bury themselves and may disappear into a deep sand bed with surprising rapidity.
Family: Calappidae
Other common name(s):
- Box Crabs
Native range:
Maximum length: 30 cm (12 in)
Minimum aquarium size: 380 L (100 gal)
Lighting: Immaterial.
Water: Marine 24 °C (297 K, 75 °F) - 28 °C (301 K, 82 °F)
[edit] Feeding
Predatory on snails; must be fed live large snails.
[edit] Aquarium Compatibility
Not reef aquarium animals, but will do well in a species tank devoted to them.
[edit] Special Care
They must be provided with a deep sand bed, as most species live on or bury into sand.
[edit] Notes
Given the mechanical advantage inherent in their claws, it is best if the aquarist takes care not to be grabbed by them.
| Common name | Shameface Crabs +, and Box Crabs + |
| Family | Calappidae + |
| Genus | Calappa + |
| Image credit | SWM + |
| Lighting | Immaterial. + |
| Maximum length | 12 in + |
| Minimum aquarium size | 100 gal + |
| Native range | Tropical Seas + |
| Reference | A PocketExpert Guide to Marine Invertebrates + |
| Specific name | spp. + |
| Text credit | RLS + |
| Water max temp | 301 K (28 °C, 82 °F) + |
| Water min temp | 297 K (24 °C, 75 °F) + |
| Water type | Marine + |