Purple Arm Crab

Why the Purple Arm Crab Makes a Great Pet

The crab’s vibrant purple arms and unique coloration make it a visually appealing addition to your aquarium or terrarium.

Hardy and adaptable, the Purple Arm Crab thrives in semi-aquatic setups with minimal care requirements.

These crabs are excellent cleaners, feeding on algae, detritus, and leftover food, contributing to a cleaner environment.

Active and curious, they love climbing, burrowing, and exploring their surroundings, providing endless entertainment.

They don’t require a large tank, making them ideal for hobbyists with limited space.

Great for children and beginners to learn about semi-aquatic ecosystems and crustacean behavior.

Their hardy nature and simple care requirements make them perfect for first-time crab owners.

Requires minimal equipment and food, making it an affordable pet.

Watching their quirky movements and territorial displays adds life to any aquarium or terrarium.

With proper care, the Purple Arm Crab can live up to 2–3 years, providing a unique and enjoyable pet experience for aquarists of all levels!

Tank Size

Minimum 10-gallon tank for a pair. Larger tanks are better for groups.

Provide both land and water areas.

Land: Use rocks, sand, or gravel for burrowing and resting.

Water: Shallow brackish water is ideal, with salinity levels between 1.005–1.015.

Substrate and Décor

Rocky or coral-like structures to provide hiding spots.

Sand or fine gravel for burrowing.

Live plants for a natural environment, if applicable to the tank type.

Species compatibility

Avoid fish or invertebrates that could harm or be harmed by the crab.

Suitable companions include small, peaceful species like snails or shrimp.

V. How to feed this species?

Commercial crab pellets or fish food.

Fresh vegetables (spinach, zucchini, carrots).

Protein sources (boiled shrimp, bloodworms, or freeze-dried insects).

Occasional fruit treats (small apple slices or banana).