The Arrow crab or Spider crab (Stenorhynchus seticornis) is one of the most weird-looking crabs in the marine aquarium industry. Nonetheless, whatever you can think of its appearance, there are certain debates about this species (aggression, feeding habits, breeding, care, etc).

The Arrow Crab (Stenorhynchus seticornis) is one of many premium ornamental invertebrates available for your saltwater marine aquarium at LiveAquaria®.

Apr 5, 2025 · Also called Spider Crabs, Arrowhead Crabs and Yellowline Arrow Crabs, the Stenorhynchus seticornis is an ornamental species with fantastic cleaning habits. They’re commonly found in the western Atlantic Ocean populating the lush coral reefs from around North Carolina down to Bermuda and Brazil .

A quick guide to help you decide if the Yellowline Arrow crab (Arrowhead crab) is right for your tank. Includes diet, tank size, reef safe, and care tips

Stenorhynchus seticornis, the yellowline arrow crab or simply arrow crab, is a species of marine crab. Stenorhynchus seticornis was first described by Johann Friedrich Wilhelm Herbst in 1788, under the name Cancer seticornis.

Mar 14, 2025 · In terms of safety, Arrow Crabs are not typically aggressive towards humans, but they do have sharp claws that can cause harm if handled improperly. It’s important to take caution when interacting with your Arrow Crab and to avoid handling it with your bare hands.

Nov 24, 2023 · Arrow Crabs (Stenorhynchus Seticornis) are amazing creatures with small, triangle shaped bodies. The head of the Arrow Crab is very pointy, and has a rostrum at the end. A rostrum is a beak-like projection that is essentially a snout. The rostrum of the Arrow Crab is rather long, and serrated looking.

Apr 21, 2023 · Arrow crabs are small, shy creatures that hide in caves and crevices during the day. At night, they come out to hunt. Their long claws make reaching into small, deep holes to grab prey easy. These crabs are fast movers with long legs. They spend much time scuttling about their environment.

Apr 1, 2020 · Let us introduce you to this spindly number: the arrow crab. With its extremely long, spindly legs and a unicorn-like horn on its head, this crab is hard to overlook. Keep reading for everything you need to know about keeping arrow crabs in your aquarium!

Apr 8, 2013 · The yellowline arrow crab, Stenorhynchus seticornis, is a strange looking crab that has a striking resemblance to a “daddy long legs.” The whole body is covered in a golden-brown color, with white, brown, or gold stripes running along their body and legs.