Vampire Crab 

Vampire crabs do not depend on saltwater for their development; instead, they live near freshwater rivers and in forests amongst rocks and dense vegetation.
Vampire Crab  Scientific Classification
Scientific name
Geosesarma dennerle
Vampire Crab  Physical Characteristics
Yellow, Cream, Purple
2 years
Vampire Crab  Distribition

Vampire crabs do not rely on deep sea for their advancement; rather, they live near freshwater rivers and in woodlands among rocks and thick plants.

This small crab is among one of the most prominent storage tank pets nowadays, and everyone desires one. While vampire crabs do not prey on blood as their name requires, they are nighttime and are largely energetic during the night.

Vampire crabs vary from many shellfishes since they are semi- terrestrial, indicating they live a lot of their life ashore and invest a few of their time in the water.

These thrilling animals are fresh water shellfishes initial uncovered in woodlands, rivers, and lakes on the Island of Java, Indonesia. Later on, residents located them on tiny islands off the shore of Indonesia called Sulawesi, Riau, and Krakatau.

Vampire crabs have actually been appearing in fish tanks for years; nonetheless, they were just formally uncovered in 2006. So, normally, there is extremely little details offered on their environment and biology.

These crabs are difficult little individuals; they can grow in the appropriate setting however have a couple of special treatment needs.

Remarkable Truths Concerning Vampire Crabs

  • These small crabs get to just 2 inches when completely expanded, including their legs
  • Males are somewhat bigger, and their claws are lighter than the females.
  • Vampire crabs measure up to their name and are nighttime animals
  • These crabs are hostile with various other species of crab or tiny fish and will certainly also strike or eat them, however they are civil with their very own species.
  • Vampire crabs do not live that long; their life-span is typically 2 years, however they can expand somewhat older with correct treatment.

Classification and Scientific Name

The Vampire crab’s scientific name is Geosesarma dennerle Nonetheless, the factor for their typical name (Vampire Crab) is a topic of discussion.

Some think that it’s as a result of their purple bodies and yellow eyes that look like Dracula, while others believe it’s since they have lotion- tinted places on their bodies in the form of bats.

Vampire crabs come from the genus Geosesarma that includes semi- earthbound crabs dispersed extensively throughout the eastern Indian Sea, Southeast Asia, and the western Pacific. Nonetheless, since they were just just recently uncovered, their taxonomy is still in a state of change. Both acknowledged species within the genus are the:

  • Vampire crab that is violet and lotion in shade ( Geosesarma Dennerle)
  • Red Devil Crab that is dark brownish and intense orange ( Geosesarma Hagen)

Vampire Crab Environment

Vampire crabs are primarily located on the Island of Java, Indonesia, and their environments consist of freshwater rivers, lakes, thick plants, and rough surface in the woodland.

Exactly How to Determine Vampire Crabs: Appearance and Summary

The vampire crab is tough to miss out on with its violet coloring, particularly basing on its 10 legs (that includes the pinchers). Their bodies are so dark that they nearly look black and are covered in lotion places looking like a bat’s rundown, which is why their yellow eyes attract attention a lot.

They are small little points, hardly getting to 2 inches in size, including their legs; their body alone is just 1 inch large.

While vampire crabs share the exact same main features as routine crabs, they still attract attention and are very easy to determine. As an example, besides their coloring, they have extremely tiny pinchers; they are so small that they would not have the ability to harm individuals conveniently.

There are a number of means to separate in between males and females, with one of the most evident their dimension. Males are somewhat bigger than females, and their claws are lighter in shade.

One more distinction is their underbelly. The male’s stomach flap is sharp, while the females are rounded and broader.

Another free gift is the eggs. As soon as breeding achieves success, the female will certainly lug about 20 to 80 fed eggs (depending upon dimension) under her abdominal area for regarding a month up until they hatch out.

A vampire crab sitting on top of a coconut
Vampire crabs are small, getting to just 2 inches in size including their legs.Dan Olsen/Shutterstock. com

Vampire Crabs Diet

Vampire crabs aren’t fussy eaters; they are omnivores and will certainly eat almost anything. In their all-natural environment, these crabs will certainly victimize:

  • Living and dead crickets
  • Grasshoppers
  • Earthworms
  • Mealworms
  • Woodlice
  • Springtails
  • Worms
  • Plant detritus

Nonetheless, their diet plans are a bit various in bondage and can contain:

  • Brine shrimp
  • Earthwork items
  • Bloodworms
  • Dried algae
  • Shrimp
  • Fish flakes
  • Wafers
  • Pellets
  • Vegetables
  • Dry leaves

Crabs sign up with the team of crayfish, shrimp, and snails that call for a great deal of calcium to maintain their exoskeleton healthy and balanced.

Vampire Crab Actions

These crabs are semi- terrestrial and invest most of their lives ashore and a few of their time in the water.

When in a fish tank, the vampire crab will certainly invest a lot of its time in the exact same area. Furthermore, vampire crabs measure up to their names and are largely energetic during the night (nighttime.)

These small little crabs molt. Their exoskeletons secure them however do not expand with the remainder of the body. So when their body expands as well big for their exoskeleton, they have to discard it to establish a brand-new one.

Grown-up vampire crabs will certainly molt when every one month. Nonetheless, when they are more youthful, molting can be a lot more constant since they expand much faster.

Vampire crabs are unbelievably vulnerable once their defense is gone, and they will certainly remain concealed up until a brand-new exoskeleton creates.

When in bondage, it is very important to eliminate the thrown out exoskeleton from the storage tank and refrain not touch the crab since also the smallest touch might damage it.

These small crabs have a hostile touch and will certainly encounter various other species like tiny fish and various other crabs. Yet, oddly, they endure their very own species. They utilize their claws to strike however are not damaging to humans since their pinchers are as well tiny.

Predators and Risks

Vampire crabs require to be careful of several predators in the wild. Any type of crab- consuming animal is a danger to them. As an example:

  • Birds
  • Fish
  • Turtles
  • Snakes
  • Sea otters

Nonetheless, their most significant danger is the pet profession. Their intense shades and edgy name have actually stimulated individuals’ rate of interest, and over- accumulating is beginning to come to be a trouble.

Reproduction and Life Expectancy

As soon as mating period mores than, it takes around one month for the eggs to hatch out. You can inform when the eggs will hatch out when the female ends up being even more deceptive and conceals 24/7. Females can lug in between 20 to 80 eggs under their abdominal areas, depending upon their dimension. There are no larval phases since the eggs are big sufficient for straight advancement.

After hatching out, females provide online birth to completely established mini crabs. They are birthed in freshwater and just action in between 1 to 2 mm at birth.

The female stick with them and guards them under her abdominal area for a number of weeks up until they allow sufficient to venture out individually.

Furthermore, the zoea (infant crabs) become cannibals after brooding mores than, so it’s finest to divide the mom from the zoea if you desire them to make it to their adult years.

This cannibalistic habits additionally takes place throughout the molting period, so containers have to have a wealth of concealing areas, or they need to be divided by dimension.

Vampire crabs can measure up to 2 years, however they can linger somewhat much longer with added love and treatment.

Looking After Vampire Crabs

The storage tank for a vampire crab will certainly look extremely various from your ordinary aquarium. This is since they call for something called a paludarium configuration. That implies that there are land components and water components.

Vampire crabs are not geared up to remain in water for extended periods of time and will certainly sink. For that reason, 80% of their storage tank need to be earthbound and 20% marine. Nonetheless, the minimal needs are 50/50.

Container Dimension

The general rule relating to storage tank dimension is a 10- gallon storage tank for a team of 6 vampire crabs. The marine component can be a deep 4 to a 6- inch tray with simply adequate water to cover their bodies. Furthermore, containers require a limited- suitable cover since vampire crabs are terrific escaper.

Container Atmosphere

The vampire crab can just make it through in an exotic setting. For that reason, the perfect temperature level of the storage tank need to be in between 75 ° F– 82 ° F. One more aspect that requires interest is the moisture degree, which need to be 75% or greater.

Water must constantly be tidy, particularly throughout molting and reproduction durations. Vampire crabs are very conscious unclean water, and it might lead to ailment, which can be deadly. To accomplish tidy and healthy and balanced water, swap it for fresh water on a monthly basis.

Make certain the land component consists of great sand like crushed rock, sand, planet, or a sand- planet mix, since they enjoy to tunnel, and great sand will certainly not damage their pinchers or coverings.

Since they are typically located in thick woodlands, the storage tank should reproduce that, and need to be greatly grown in particular locations. Furthermore, they require several concealing places, which might be made from PVC pipelines, rocks, and driftwood, simply among others.

What’s Following?


  1. Aquariadise, Available here:
  2. Live Science, Available here:
  3. Fish Laboratory, Available here:
  4. Aquarium Breeder, Available here:
  5. Wikipedia, Available here:,crabs%20found%20on%20Java%2C%20Indonesia.&text=It%20is%20popular%20in%20the,simply%20called%20%22Vampire%20Crab%22.
  6. Fish Keeping World, Available here:

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