1 kinds · tap one for a closer look
Semi-aggressive toward its own kind; best in a paludarium.
This one is best kept on its own, or with its own kind.
Semi-aggressive toward its own kind; best in a paludarium.
Good to know: Needs land above the waterline.
Small meaty foods, fish flakes and vegetables.
Tap a food to see what it is.
Common problems. Tap one to see the signs. This is a guide, not a diagnosis.
Direct-developing egg bearer · Moderate
Eggs hatch as tiny crabs without a marine phase.
One male and 2-3 females.
Paludarium with shallow water and lots of land and hides.
High humidity and warm water.
20-40 eggs carried on the female.
Tiny crabs; feed tiny foods.
A small dark red crab belonging to the vampire crab group. It lives mostly on land near water.
This crab is an undescribed Geosesarma known only by its trade name. It reached the hobby in the 2010s alongside other colourful 'vampire crabs', which became popular for planted terrariums.
5 facts checked with sources
No valid species name. "Thai Devil" is a trade name; no fetched source identifies the animal or even confirms it is a Geosesarma. Only three Geosesarma are described from Thailand (G. serenei, G. krathing, G. todaeng) and none is linked to this trade form in a source. Keep it as "Geosesarma sp. 'Thai Devil' (trade name, unidentified)". Invertebrate: small semi-terrestrial crab.
Ng, Yeesin & Promdam 2023, A new species of vampire crab (Geosesarma) from Narathiwat, southern Thailand, Tropical Natural History 23: 97-104 · Garnelio shop: Crabs for aquaterrarium and terrariumWould be Sesarmidae if it is a Geosesarma, but the genus is not confirmed by a source.
WoRMS / DecaNet record: Geosesarma (accessed 2026-10-16)No source for this trade form. (Wild Thai G. todaeng males are about 1.2 cm carapace width, but that is a different, named species.)
Ng, Yeesin & Promdam 2023, A new species of vampire crab (Geosesarma) from Narathiwat, southern Thailand, Tropical Natural History 23: 97-104No source for this trade form. Vampire crabs (Geosesarma) are mainly land-dwelling and need only a shallow water part, so an aquarium zone would not apply if it is one.
Garnelio shop: Crabs for aquaterrarium and terrariumNot confirmed. Many Geosesarma have direct development (young hatch as crabs), but not all: G. hednon has small eggs and sea-going larvae, so direct development cannot be assumed from the genus name alone.
Ng, Liu & Schubart 2004, Geosesarma hednon, a new species of terrestrial crab from Taiwan and the Philippines, Raffles Bulletin of Zoology 52: 239-249