Red Claw Crab (Perisesarma bidens)
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PLEASE NOTE: This species is a semi-terrestrial crab. Its habitat must be at least half (and preferably more) land with freshwater. This crab also inhabits low-end brackish areas. It is an ideal paludarium animal.
The Red Claw Crab is a mangrove species that thrives in the low-end brackish paludarium!
The Red Claw Crab (Perisesarma bidens) is a small, very colorful, semi-terrestrial species that is native throughout the Indo-Pacific region. It inhabits mangrove areas and spends most of its time on land, but also often submerges in water. It is communal with its own species, though males will sometimes fight in the confines of a smaller enclosure. This crab can live in a freshwater paludarium, but it will thrive in a low-end brackish setup.
In nature, the Red Claw Crab lives in leaf litter and vegetation. In the paludarium, it requires ample land area. It typically will not eat healthy ornamental plants, but it will often help keep them clean and it may consume dead leaves. Like most crabs, it needs plenty of cover, especially when molting, so lots of decor is necessary. While it is communal with its own species, it might be aggressive with other types of crabs. It is a skilled climber, so extra care must be taken to ensure that it does not escape its enclosure.
Like most crabs, the Red Claw Crab is an omnivorous scavenger and an opportunistic hunter on occasion. It will feed on filamentous algae and detritus in the paludarium and will also readily accept high-quality fish and invertebrate foods. Fresh and dried vegetables and fruits are also excellent food sources, as are insects, worms, and other invertebrates. It reportetly prefers animal matter over plant matter. Due to its opportunistic nature, the Red Claw Crab might eat other ornamental invertebrates and fish, so its tankmates must be chosen with great care.
- Generally peaceful with its own species
- Fascinating behavior and beautiful coloration
- Ideal for paludariums
- Easy to feed
- Excellent scavenger
- Temperature: 75° - 82° F (24° - 28° C)
- pH: 7.5 - 8.0
- KH: 4 - 10 dKH
- Humidity: 75+%
- Minimum tank size: 15-20 gallons for a male and 2 females. Larger colonies require larger tanks.
- Diet: Omnivorous. High-quality sinking flakes and pellets, plants/algae, fruits, and freeze-dried or frozen meaty foods will be readily accepted. Cuttlebone or a similar material should be added to the aquarium to supplement calcium, which will aid in exoskeleton production
- Social behavior: Peaceful with its own species. May fight with or prey on other species.
Origin: Throughout the Indo-Pacific region
- Average adult size: 2 inches (5 cm) or less
- Average purchase size: 1 - 2 inches (2.5 - 5 cm)