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Arrow Crab
| Scientific Name | Stenorhynchus seticornis |
| Diet | Omnivore; Bristleworms, anything |
| Alt Common Name | Spider Crab, Ghost Crab |
| Family | Majidae |
| Origin | Caribbean |
| Aquarist Level | Novice |
| Reef Safe | With Caution † |
| Coloration | Tan with blue & orange highlights |
| Disposition | Passive to Aggressive Predators |
| Hardiness | Very |
| Mature Size | 4 - 5 inch leg span |
| Reproduction Method | Eggs carried on the abdomen |
| Sexual Dimorphism | Females have a wider abdomen |
| Venomous | No |
Notes: This species must molt in order to grow. Generally at night, it will lay on its back and exit its exoskeleton. A new exoskeleton is excreted and will harden over a period of several hours. The animal is vulnerable at this time and should not be disturbed. Proper iodine levels assist with successful molting.
† As this crab grows larger it may prey on small fish or other invertebrates in the aquarium. While small it is a good bristleworm hunter.