Sally Lightfoot Crab

Percnon gibbesi

(13 Reviews)

Sally Lightfoot Crab

Sally Lightfoot Crab

Percnon gibbesi

(13 Reviews)

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Care Facts

Care Level: Easy
Temperament: Peaceful
Diet: Omnivore
Reef Safe: Yes
Minimum Tank Size: 20 Gallons
Max Size: 3 inches

The Sally Lightfoot Crab, Percnon gibbesi, resembles a spider and has two pairs of antennae and five pairs of legs. Their flat and low-to-the-ground body allows them to squeeze into tight spaces and escape potential predators. Its carapace is bright red with yellow or orange rings around its appendages. It is an excellent scavenger that will search the live rock and sand for food. Like many inverts, it will lose its exoskeleton in a process called molting as it grows. These crabs are very easy to maintain, active, and require little attention making them a great invert for any home aquarium. 

An Analysis of the Sally Lightfoot Crab (Percnon gibbesi) for Saltwater Marine Aquariums

The Sally Lightfoot Crab (Percnon gibbesi) is a suitable option for enthusiasts of saltwater marine aquariums who seek a scavenger with interesting characteristics. This objective product description offers accurate insights and guidelines concerning the Sally Lightfoot Crab's attributes and care requirements.

Habitat and Reef Compatibility of the Sally Lightfoot Crab

Native to the Western Atlantic, Sally Lightfoot Crabs inhabit rocky coastlines and tidal pools. Their natural habitat makes them suitable for reef aquariums, contributing to the marine ecosystem. They are reef safe and help in keeping the aquarium clean.

Size and Lifespan of the Sally Lightfoot Crab

Typically measuring 2 to 4 inches in diameter, Sally Lightfoot Crabs exhibit a moderate size within aquarium settings. Under favorable conditions, they can live for several years, enhancing the long-term viability of an aquarium.

Molting Behavior of the Sally Lightfoot Crab

Like all crustaceans, Sally Lightfoot Crabs molt to accommodate growth. Observing molting behavior is indicative of their well-being and developmental progress.

Diet and Compatibility of the Sally Lightfoot Crab

Sally Lightfoot Crabs are opportunistic omnivores, consuming a diet that includes algae, detritus, and tiny organisms. Their adaptable feeding habits enhance their compatibility with various marine inhabitants.

Temperament and Suitable Tank Mates for the Sally Lightfoot Crab

With a generally non-aggressive demeanor, Sally Lightfoot Crabs coexist well with various marine species. They can comfortably share a tank with small, peaceful fish like gobies, blennies, certain damselfish species, and specific wrasses.

Tank Requirements and Aquascaping for the Sally Lightfoot Crab

Recreating rocky terrain in line with their natural habitat suits Sally Lightfoot Crabs. Provide hiding spots and crevices to replicate their preferred sheltered environment. A minimum aquarium size of 20 gallons is recommended to accommodate these crabs comfortably.

Detailed Water Conditions for the Sally Lightfoot Crab

Maintaining accurate water parameters ensures the health of Sally Lightfoot Crabs:

  • pH: 8.1 to 8.4
  • Salinity: 1.023 to 1.025 specific gravity
  • Water Temperature: 72°F to 78°F (22.2°C to 25.6°C)

Lighting Requirements and Water Flow for the Sally Lightfoot Crab

Moderate lighting resembling their natural environment and moderate water movement emulating coastal tide pools are ideal for Sally Lightfoot Crabs.

Other Common Names of the Sally Lightfoot Crab

Sally Lightfoot Crabs are known as Nimble Spray Crabs or Red Rock Crabs.

Why Choose Sally Lightfoot Crabs from

Purchasing Sally Lightfoot Crabs from guarantees the acquisition of meticulously selected and acclimated specimens.'s commitment to ethical sourcing and sustainable practices ensures the availability of healthy, thriving crabs within a controlled marine environment. Opting for Sally Lightfoot Crabs from reflects an investment in responsible aquarium trade and the opportunity to observe these captivating crustaceans in a personal aquarium setting.

Healthy and active

Reviewed by: Shaun Huddleston on April 10, 2024

Reviewed by: Rudy Minor on April 2, 2024

Reviewed by: Ray Roux on Feb. 4, 2024

Looks like a huge spider in the tank. Pinchers never seem to stop moving.

Reviewed by: Dale Pichelmayer on Jan. 2, 2024

Are healthy

Reviewed by: Kevin Province on Dec. 18, 2023

Bigger than I imagined and a perfect addition to the tank. Climbs and eats everything all day long.

Reviewed by: Dale Pichelmayer on Dec. 12, 2023

Reviewed by: Evan Mixon on Nov. 26, 2023

Doing good

Reviewed by: David Orear on Nov. 15, 2023

Reviewed by: David Schneider on Oct. 24, 2023

Reviewed by: Pamela Gray on Aug. 4, 2023

Reviewed by: David Orear on June 27, 2023

Reviewed by: David Orear on June 27, 2023

The Sally Lightfoot Crab was received in great shape and has added life to my saltwater aquarium. Thanks

Reviewed by: Noel Henricks on Sept. 18, 2021

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