Overview
The Red Claw Crab (Perisesarma bidens) is a intermediate brackish species known for its red-brown, red claws coloration. Semi-terrestrial. Land and Water.
Origin & Appearance
Origin: Indo-Pacific.
Colors: Red-Brown, Red claws.
Body Shape: Crab (wide carapace). Typical adult dimensions: 7.0 x 10.0 x 4.0.
Sexual Dimorphism: Moderate; males have narrower abdomen.
Tank & Water Requirements
| Min Tank Size | 11 gallons |
| Temperature | 72–82°F |
| pH Range | 7.5–8.5 |
| Water Hardness (GH) | 10-25 |
| Bioload | low |
| Oxygen Demand | medium |
| Plant Safe | mostly |
| Aquarium Position | Land and Water |
Behavior & Activity
Semi-terrestrial sideways walker; climbs out of water onto land; waves large claw in display; sideways scuttling
Speed: 20/100Aggression: 4/10diurnal
Breeding
Difficult; larvae need saltwater
Common Diseases
💊 Molt failure💊 bacterial
Expert Notes
Semi-terrestrial; needs land access; brackish