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Red-Spotted Guard Crab (Trapezia tigrina)

Find Red-Spotted Guard Crab across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified invertebrate listings before you buy.

Red-Spotted Guard Crab
Photo: Diego Delso · CC BY-SA 4.0
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Where to buy Red-Spotted Guard Crab

ReefDock searches the following reef retailers for this invertebrate. Click through to see the live price.

  • Saltwaterfish

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    Search Saltwaterfish
  • Amazon

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  • Petco

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About Red-Spotted Guard Crab

A small, stocky crab with a dark carapace displaying characteristic bright red or orange spots; the body is compact and flattened, with robust claws. Maximum size around 1 inch.

Key facts

Care Level
Moderate
Family
Trapeziidae
Compatibility
Generally compatible with corals and small invertebrates, but may nip or harass delicate polyps and crustaceans. Best kept singly or in pairs within established corals.
Type
Crab
Min tank size
30 gallons
Appearance Description
A small, stocky crab with a dark carapace displaying characteristic bright red or orange spots; the body is compact and flattened, with robust claws. Maximum size around 1 inch.
Category
Crab
Origin
Indo-Pacific region from the Red Sea through Southeast Asia to the Great Barrier Reef and Hawaii.
Diet Details
Omnivorous scavenger feeding on zooplankton, small crustaceans, and detritus. Supplement with quality frozen foods like mysis shrimp and brine shrimp 2–3 times weekly.
Notes
• Minimum 30 gallon tank • Maintain temperature 72–79°F, pH 8.1–8.3, salinity 1.023–1.025 • Prefers stony corals (particularly acropora and pocillopora) where it establishes symbiotic relationships and receives food from coral zooxanthellae • Nocturnal and reclusive; provide plenty of coral branches and rockwork for shelter • Generally reef-safe when hosted in appropriate corals; may pinch unwary fish or inverts
Max Size
1
Water Parameters
Temperature: 72-79°F pH: 8.1-8.3 Salinity: 1.023-1.025

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell invertebrates directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current invertebrates listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible invertebrate listings — so you can see the conditions a invertebrate was raised in before you buy. Log this invertebrate on Reef Trak.

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