Red vampire crab

Geosesarma hagen

Also known as Red devil crab, Vampire crab

FreshwaterCrab

Care at a glance

Temperature
72–82°F
22–28°C
pH
7.5–8.0
Adult size
2 in
5 cm
Minimum tank
10 gal
38 L
Temperament
Mostly peaceful
Tankmates
With caution
Diet
Omnivore
Breeding
Egg carrier · Medium
Rarity
Common
Family
Sesarmidae
Origin
Indonesia (Java, Sulawesi, Riau Islands)

Overview

The red vampire crab is a small land crab for a humid paludarium with hard water. It is best with a little experience.

Did you know

Red vampire crabs breed right in the tank, in fresh water, with no brackish phase. That is unusual for a crab, since many crabs release free-swimming larvae instead.

Caring for the red vampire crab

Build a paludarium that is mostly land over a shallow water area, with at least 10 gal (38 L) for a group. Keep the humidity high, with a tight lid to hold it in. Red vampire crabs are bottom dwellers that climb and forage across the land area, spending little time in the water.

Keep the air warm, at 72 to 82°F (22 to 28°C). Use hard, mineral-rich water rather than plain RO, since they need the hardness, and aim for a pH of 7.5 to 8.0. Feed a mix of dried foods, blanched vegetables and protein such as bloodworms or bits of fish. Add a calcium source such as cuttlebone for molting.

Keep more females than males, because males are territorial and can kill each other. Otherwise red vampire crabs are mostly peaceful, but they will hunt small fish and other crab species. Choose any tank mates with caution.

A female carries her eggs until they hatch as tiny, fully formed crabs that can walk straight away. The adults will eat the young, so move any babies you want to raise into their own container. Breeding is moderately difficult.

Good to know

Geosesarma hagen is a small land crab in the family Sesarmidae. Most red vampire crabs in the trade are wild collected.

In the wild

Red vampire crabs come from Indonesia, across Java, Sulawesi and the Riau Islands. They live along damp forest floors and stream banks rather than in open water, and they spend most of their time on land.

Common questions

What size tank does a red vampire crab need?

A red vampire crab needs at least 10 gal (38 L). It spends most of its time in the bottom.

What temperature and pH does a red vampire crab need?

A red vampire crab is comfortable at 72–82°F (22–28°C) with a pH of 7.5–8.0.

What does a red vampire crab eat?

A red vampire crab eats a mix of dried foods, blanched vegetables and protein such as bloodworms or bits of fish. Give it cuttlebone or another calcium source for molting.

How big does a red vampire crab get?

An adult red vampire crab reaches about 2 in (5 cm).

How does a red vampire crab breed?

A female red vampire crab carries her eggs until they hatch as tiny crabs that can walk straight away. Move the babies into their own container, since the adults will eat them. Breeding is moderately difficult.

Related species