MoonlightAquatics Pom Pom Crab (Ptychognathus barbatus)
The Pom Pom Crab is a unique and visually striking marine species known for its soft, fluffy pincers and vibrant coloration. This crab is native to shallow coastal waters and thrives in well-maintained aquarium environments.
Designed for enthusiasts seeking a distinctive and interactive pet, the Pom Pom Crab is ideal for medium to large saltwater tanks with stable water parameters.
| Feature | Detail |
|---|---|
| Species | Ptychognathus barbatus |
| Size (adult) | 3 to 4 inches |
| Lifespan | 5 to 7 years |
| Water Temperature | 72°F to 78°F |
| Water pH | 8.1 to 8.4 |
| Compatibility | With non-aggressive, peaceful marine species |
FAQ
What is the ideal tank size for a Pom Pom Crab?
A minimum of 30 gallons is recommended to provide adequate space and stability for the crab’s movement and behavior.
Can the Pom Pom Crab live with other fish?
Yes, it can coexist with non-aggressive, peaceful marine species such as gobies and small angelfish, provided the tank is well-maintained and has ample hiding spots.
How often should the water be changed?
Weekly partial water changes of 10-20% are recommended to maintain stable water conditions.

Nathan Carr –
The crab is very active and adds a lot of charm to the tank. It seems to enjoy exploring and interacting with the environment. Water parameters are stable after setting up the tank properly. Great for someone who wants a unique and lively marine pet.
Steven Mackenzie –
It’s a beautiful addition to my saltwater aquarium. The crab is curious and doesn’t seem aggressive. I’ve noticed it spends time near the substrate and filter area. Needs a stable environment, but overall a satisfying pet.
Jack Underwood –
I’ve had this crab for six months now and it’s still active and healthy. The coloration is vivid and the pincers are soft and responsive. It’s a great choice for a beginner with a medium-sized tank.