More info
Datasheet
| Minimum Tank Size | 50 litres / 13.21 US gallons |
| Maximum Size | 5.0cm / 1.97inches |
| Reef Compatible | Always reef safe |
| Temperament | Peaceful |
| Temperature | 22.2°C / 71.96°F - 25.6°C / 78.08°F |
| Specific Gravity | 1.020-1.025 |
| Carbonate Hardness | 8-12 |
| pH | 8.1-8.4 |
General Description
The Porcelain crab, belonging to the Majoidea family Petrolisthes, is known for its secretive nature, often hiding and rarely seen out in the open. This species can grow up to 5.0cm in size and is recognized for its unique behavior of dropping one or both claws when stressed.
Aquarium Suitability
Porcelain crabs are considered suitable for most aquarium setups and are known for their hardiness, making them a good option for beginners. With a minimum tank size requirement of 50 liters, they are compatible with reef environments and are always considered reef safe.
Care and Hardiness
These crabs are hardy creatures and thrive in aquariums with water conditions maintained at a temperature ranging from 22.2-25.6°C, a pH level of 8.1-8.4, a specific gravity of 1.020-1.025, and a carbonate hardness (kH) of 8-12.
Reef Suitability
Porcelain crabs are ideal for reef setups due to their peaceful temperament and reef compatibility. They add interest to the tank without posing a threat to coral or other reef inhabitants.
Aquarium Setup
To create a suitable habitat for Porcelain crabs, provide plenty of hiding spaces such as caves, rocks, and crevices for them to feel secure. Ensure the lighting is dimmed or turned off during the night as they are nocturnal creatures and most active during these times.
Behaviour
Known for their peaceful temperament, Porcelain crabs are best suited for community aquariums as they do not engage in aggressive behavior. Their nocturnal nature means they will be more active when the tank lights are dimmed.
Feeding and Diet
Porcelain crabs primarily feed on detritus in the wild but in captivity, they can be fed a diet consisting of small crustaceans like krill, mysis, and artemia. Providing a varied diet will help maintain their health and vibrancy.
Habitat and Distribution
Found in various regions including the East Indian Ocean, West Indian Ocean, Australia, Japan, The Red Sea, The Mexican Gulf, West Atlantic, Indonesia, Mediterranean Sea, East Pacific, and New Zealand, Porcelain crabs inhabit shallow waters where they can scavenge for food and seek shelter in crevices and rocky outcrops.