Saltcorner
By Bob Goemans
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Two Little Fishies 

Family Limulidae

Limulus polyphemus

(Linnaeus, 1758)

Horseshoe Crab, King Crab

Likely Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Atlantic Ocean: Gulf of Mexico and east coast of North America.

Size: 24 inches (60 cm)

Natural Environment: Inhabits intertidal zones.

General Husbandry: Occasionally seen in the trade.

Small specimens do better in an aquarium with a sandy substrate, as it likes to bury itself.

Finely diced squid, fish, live brine shrimp, along with some algae to graze on is generally sufficient for its needs. Sinking shrimp tablets also a good foodstuff.

Taxonomy:

    Kingdom: Animalia

    Phylum: Arthropoda

    Class: Merostomata

    Order: Xiphosurida

    Family: Limulidae

    Genus: Limulus

FYI: Not fussy about water quality.

More a novelty in the aquarium.

Experience Level: Intermediate

Diet: Omnivore

Temperament: Peaceful

Aquarium Environment: Reef or fish-only aquarium

Coral Safe: Yes

Fish Safe: Yes

Invertebrate Safe: Yes

Temperature Range: 68 - 79°F (20 - 26°C)

 Limulus polyphemus (Horseshoe Crab, King Crab)
Photo © Vincent Hargreaves
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