Borgorensis Vampire Crab

Appearance:

• Size: Borgorensis Vampire Crabs are relatively small, with a body size (carapace) of around 1-2 inches (2.5-5 cm). Including their legs, they can span a bit larger, but they remain compact in comparison to other crabs.
• Coloration: These crabs feature an attractive combination of colors, with their carapace often being purple, brown, or reddish-brown, contrasted by vibrant orange or yellow claws. Their eyes are usually bright yellow, giving them a striking and almost "vampire-like" appearance.
• Variation: The exact coloration and intensity can vary slightly based on their environment and diet.

Natural Habitat:

• Origin: Borgorensis Vampire Crabs are native to the tropical forests of Southeast Asia, particularly found in the Indonesian island of Java, near Mount Bromo and surrounding regions.
• Environment: In their natural habitat, they live near streams and rivers, in moist, forested areas. They are semi-terrestrial, spending much of their time on land but also requiring access to freshwater.

Water and Land Requirements:

• Semi-Terrestrial Setup: These crabs need a paludarium or terrarium setup with both land and water areas. The land portion should make up about 70-80% of the tank, with a small, shallow water section for them to soak and stay hydrated.
• Substrate: The land area should have a soft, moisture-retaining substrate such as coconut fiber (coir), sphagnum moss, or a soil mix. This helps maintain humidity and allows the crabs to dig burrows. The water area should have a gentle slope or easy access, with shallow water (1-2 inches deep) and hiding spots like rocks or driftwood.
• Humidity: As tropical creatures, they require high humidity levels, typically between 70-90%. A misting system or regular hand misting can help maintain appropriate moisture levels.
• Water Conditions: The water section should be freshwater and kept clean with a gentle filter. The ideal water temperature ranges from 75-82°F (24-28°C), with a neutral pH of around 6.5-7.5. Regular water changes are important to keep the water quality high, as they are sensitive to poor water conditions.
• Tank Size: A tank of at least 10 gallons is recommended for a small group (3-5 crabs). These crabs are social, so it's best to keep them in groups. A larger tank will provide more space for exploration and territory.

Behavior:

• Semi-Terrestrial: Borgorensis Vampire Crabs spend most of their time on land, but they also need access to freshwater. They are nocturnal and are most active during the evening and nighttime.
• Social: These crabs are typically peaceful and social when kept in groups of their own species, though there can be occasional minor territorial disputes. It's best to provide plenty of hiding places to reduce stress and aggression.
• Burrowing: They enjoy burrowing in soft substrates, creating small hideouts where they can feel secure.
• Climbing: These crabs are agile and can climb on plants, rocks, or decorations in their enclosure.

Tank Mates:

• Species-Only: Borgorensis Vampire Crabs are best kept in species-only tanks or with other similar Vampire Crab species. They may show aggression towards fish or smaller invertebrates, so mixing them with other animals can be risky.
• Avoid Aggressive Species: Avoid housing them with larger, aggressive crabs or other animals that might compete for space or view them as food.
• Multiple Crabs: A small group of 3-5 crabs can live peacefully as long as they have enough space and hiding spots.

Feeding:

• Omnivores: Borgorensis Vampire Crabs are omnivores, feeding on a variety of foods both in the wild and in captivity.
• Diet: In captivity, their diet should include a mix of plant-based and protein-rich foods. They will eat:
  • Commercial crab or invertebrate pellets.
  • Blanched vegetables (like spinach, carrots, zucchini).
  • Leaf litter, decaying plant matter.
  • Small insects or protein sources like bloodworms, brine shrimp, or pieces of fish.
  • Algae wafers or spirulina-based foods for added plant content.
• Feeding Frequency: Feed them small amounts once a day or every other day. Remove uneaten food to maintain cleanliness and prevent mold or decay.

Breeding:

• Difficulty: Breeding Vampire Crabs in captivity can be challenging but is possible with the right conditions. The crabs must feel secure in their environment, and water quality should be high for successful breeding.
• Eggs: Female crabs carry fertilized eggs under their abdomen, and after a period of about 3-4 weeks, the eggs will hatch. The hatchlings, known as zoea, are very small and need special care.
• Larvae: Newly hatched larvae are aquatic and will spend the first stage of their life in water. As they mature, they will begin to transition to a more terrestrial lifestyle.

Lifespan:

• Lifespan: Borgorensis Vampire Crabs typically live 2-3 years in captivity, though with excellent care, they may live longer.

Special Considerations:

• Escape Artists: These crabs are excellent climbers and can escape from enclosures that aren't properly sealed. Ensure your tank or terrarium has a secure lid.
• Moulting: Like other crabs, Borgorensis Vampire Crabs go through a molting process where they shed their exoskeleton as they grow. During this time, they will often hide and are vulnerable, so it’s important to provide plenty of hiding places.
• Hiding Places: In addition to plants, provide plenty of caves, rocks, or driftwood in the enclosure. This will help them feel safe and reduce stress.