Horseshoe Crab

Species information for the Horseshoe Crab, in the Crabs category.

  1. Scientific name - Limulus polyphemus

    Family – Limulidae

    Common name – Horseshoe Crab

    Max Size – 12 in (30 cm) For the smaller species

    Min. Aquarium size – 180+ gal

    Range: Atlantic Ocean

    Care Level – Easy

    Temperament – Peaceful

    Foods and feeding – This crab will search through the sand bed looking for food, but its diet need to be supplemented with quality meaty foods. Most will starve in captivity.

    Supplements: Calcium, Magnesium, Iodine, Trace Elements

    Aquarium suitability - Please leave this creature in the ocean.

    Reef compatibility – With Caution

    Captive care – The horseshoe crab requires a large (10 sq ft), deep (6+ in) sand bed for them to dig in looking for food, but the do need a supplement diet. They can cause rock structures to fall over as they move the sand bed around. When they are larger they can harm other creatures in the tank, such as worms and clams as they root around. Crabs are extremely sensitive to nitrates and copper and small amounts will kill them.
    Last edited: Feb 7, 2011
    little_fish, Jan 31, 2011