Description

Purple Arm Crab (Purple Crab) – Colourful Live Aquarium Crab for Freshwater & Brackish Tanks

Add a splash of colour and excitement to your aquarium with the Purple Arm Crab, a striking semi-aquatic crab admired for its vibrant purple claws and fascinating behaviour. Perfect for beginners and experienced aquarists alike, this hardy species is easy to care for, entertaining to watch, and an excellent addition to freshwater or lightly brackish aquarium setups.

Whether you’re creating a natural aquascape, a paludarium, or a semi-aquatic terrarium, the Purple Arm Crab brings constant activity through climbing, digging, exploring, and foraging.

Why You’ll Love the Purple Arm Crab

• Brilliant purple claws create a stunning display.
• Active, curious, and fun to observe every day.
• Helps consume algae, detritus, and leftover food.
• Easy to care for and suitable for beginners.
• Thrives in compact aquariums and terrariums.
• Excellent choice for freshwater and lightly brackish environments.
• Low-maintenance feeding and habitat requirements.
• Average lifespan of 2–3 years with proper care.

Aquarium & Habitat Requirements

• Minimum Tank Size: 10 gallons for a pair.
• Habitat: Semi-aquatic setup with separate land and shallow water areas.
• Substrate: Sand or fine gravel for natural burrowing behaviour.
• Décor: Rocks, caves, driftwood, and hiding places are recommended.
• Water Type: Freshwater with access to shallow brackish water if appropriate.
• Recommended Salinity: Specific gravity 1.005–1.015.

Feeding Guide

Provide a varied diet for optimum health:

• Crab pellets or sinking aquarium food.
• Fresh vegetables including spinach, zucchini, peas, and carrots.
• Protein-rich treats such as bloodworms, boiled shrimp, earthworms, and freeze-dried insects.
• Small portions of fruit, including apple or banana, as an occasional treat.

Tank Mates

Purple Arm Crabs are best kept with peaceful species. Suitable companions may include:

• Peaceful freshwater snails
• Selected shrimp species (where compatible)
• Avoid aggressive fish, large predators, or species that may nip or attack the crab.

Key Features

• Species: Purple Arm Crab
• Pet Type: Live Aquarium Crab
• Environment: Semi-Aquatic
• Water Type: Freshwater / Lightly Brackish
• Temperament: Active, Curious, Territorial
• Difficulty Level: Beginner Friendly
• Lifespan: Approximately 2–3 Years
• Diet: Omnivore
• Tank Size: Minimum 10 Gallons

The Purple Arm Crab is an outstanding choice for aquarists seeking a unique, colourful, and engaging aquatic pet. Its vibrant appearance, hardy nature, and entertaining personality make it a favourite among aquarium enthusiasts while requiring only straightforward care.