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Arrow Crab (Stenorhynchus seticornis)

Find Arrow Crab across reef-livestock retailers on ReefDock. Compare sources, check known pricing where available, and review care information before you buy.

Arrow Crab
Photo: (c) Carmelo López Abad, some rights reserved (CC BY-NC), uploaded by Carmelo López Abad · cc-by-nc
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Where to buy Arrow 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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    Search Amazon
  • Petco

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    Search Petco

About Arrow Crab

Elongated body with a bright red or orange-red coloration, featuring extremely long, thin walking legs and long, thin chelipeds (claws). The body is triangular when viewed from above, with a relatively small carapace compared to its leg span.

Key facts

Category
Cleaner
Diet Details
Omnivorous scavengers that feed on detritus, small crustaceans, and leftover food. Supplement with sinking pellets, frozen mysis shrimp, and meaty foods 2–3 times weekly.
Origin
Western Atlantic, from Florida and the Bahamas south to Brazil, including the Gulf of Mexico and Caribbean Sea.
Care Level
Moderate
Family
Inachidae
Compatibility
Arrow crabs are generally peaceful but can be territorial and may pick at slow-moving fish or invertebrates if hungry. Best kept singly or in larger tanks with plenty of hiding spaces.
Type
Crab
Appearance Description
Elongated body with a bright red or orange-red coloration, featuring extremely long, thin walking legs and long, thin chelipeds (claws). The body is triangular when viewed from above, with a relatively small carapace compared to its leg span.
Min tank size
30 gallons
Water Parameters
Temperature: 72-78°F pH: 8.1-8.3 Salinity: 1.02-1.025
Notes
Distinctive spider-like appearance with long legs. Active during day and night. Requires stable parameters (SG 1.020-1.025, pH 8.1-8.4). Temperature range 72-78°F. Can live 2-3 years. Needs regular feeding to prevent coral picking. Best kept singly unless in very large systems.
Max Size
3

Research before you buy

ReefDock is the sister app to Reef Trak. Use Reef Trak to research and log invertebrates, keep tank parameters organized, and maintain a complete livestock history. Log this invertebrate on Reef Trak.

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