Please select from the available Marine Fish Species below. You may also click here to browse the category.

Super Specials

Spotted Mandarin Dragonet

Starting at : $27.99$24.99

Shop Now

Bubble Tip Anemone Purple Base with Ocellaris Clownfish

Starting at : $74.99

Shop Now

Please select from the available Invertebrate Species below. You may also click here to browse the category.

Super Specials

30 Assorted Cleaner Snails + 30 Assorted Hermit Crabs - Limit 1 Super Special

Starting at : $39.99

Shop Now

Maxi-Mini Carpet Anemone - Limit 3 Favorite Anemone Super Special

Starting at : $55.99$14.99

Shop Now

Please select from the available Coral Species below. You may also click here to browse the category.

Zoanthids

Super Specials

Mushroom Polyp - Ricordea Green

Starting at : $47.99$31.99

Shop Now

Corals

Arrow Crab

Stenorhynchus seticornis

Customer Reviews Write a review

Arrow Crab

Size: Medium

~~$23.99~~

$19.99

Waiting list

Arrow Crab

Size: Large

~~$29.99~~

$24.99

Add to Cart

Care Facts

Care Level :	Easy
Temperament :	Bold
Diet :	Worms, Flake, Meaty foods
Origin :	Caribbean
Minimum Tank Size :	~
Acclimation Time :	2+ hours
Reef Safe :	Yes
Coral Safe :	Yes
Invertebrate Safe :	Yes
Lighting :	~
Placement :	~
Waterflow :	~

Reef Rewards

You will receive at least
20 reef rewards points
if you buy any item in this page

Free Shipping

With $79 or more in Marine Life. Use coupon code: freeshipping
More Details

The Arrow Crab, Stenorhynchus seticornisis, named because of its head and body which looks like an arrow. It has notable long legs. The males are larger than the females. The Arrow Crab's crawls quickly with the help of these long legs, using that advantage to attack small slower moving fish in the aquarium. It is known to feed on bristle worms as well as feather dusters. The Arrow Crab are considered reef safe if are properly fed with foods like meaty, flake and tablet foods. Breeding this species is quite difficult in captivity. The Arrow Crab can grow up to six inches and therefore we recommend you to keep it in a larger aquarium. It inhabits small caves or crevices, so lots of rockwork is required to be added in your beautiful tank. The Arrow Crab is hardy, long lived invertebrate that can be housed in the reef tank. It is known to attack crustaceans such as Banded Coral Shrimp, and slow moving fish, therefore this crab should be combined with selected species only. The Arrow Crab should be kept singly and should not be kept with similar species, since it may turn aggressive towards other inhabitants.

I've just started my first full marine tank. Have had a little experience with fish-only before. I got an arrow crab, along with a crab/snail kit from saltwaterfish.com (about 50 of the little critters). Two weeks later, there's a small graveyard of the smaller ones in a pile behind a piece of live rock. I think it has to be the arrow - but it's totally worth it. He's creepy, pre-historic, and puts everything in his mouth (then spits out what isn't food). He hides about half the time, and takes harmless swats at fish as they get too close. Add one to your tank.

Reviewed by: Bryan Mack on 12/04/2014

Fun to watch and great algae eater!

Reviewed by: Teresa on 04/22/2016

Pretty interesting creature, just be weary. Some arrow crabs have a tendency to hunt other inverts in your tank. I just got my arrow crab a few weeks ago and I've seen him eating 2 of my blue legged hermits. They will eat anything they can get their pincers on. Still worth it just so long as he doesn't eat everything else in your tank

Reviewed by: Matthew Purtell on 05/13/2017