Horseshoe Crab (Limulus polyphemus)
The Limulus polyphemus, more commonly recognized as the Horseshoe Crab, is an intriguing species that brings a dash of the exotic to any aquarium setting. This captivating creature, indigenous to the Caribbean region, is a natural wonder with its iconic horseshoe-shaped shell and elongated, pointed tail.
The Horseshoe Crab is an omnivorous species, flourishing on a diverse diet. Gamma Foods are specially designed to provide a spectrum of nutrients tailored to the dietary requirements of this species, promoting its wellbeing and longevity under care.
Care Requirements
These creatures are ideally suited to a reef aquarium environment. They require stable water conditions, including a temperature range of 24–28°C and a salinity level of 32–34 ppt. A well-maintained tank with strong water flow and ample hiding spaces is recommended.
| Parameter | Recommended Value |
|---|---|
| Temperature | 24–28°C |
| Salinity | 32–34 ppt |
| Water Flow | Moderate to strong |
| Diet | Gamma Foods (omnivorous) |
FAQ
What is the ideal water temperature for a Horseshoe Crab?
The ideal water temperature range is 24–28°C.
What type of food should I feed my Horseshoe Crab?
Gamma Foods are specially designed to meet the nutritional needs of the Horseshoe Crab and are recommended for regular feeding.
Can Horseshoe Crabs live in a reef aquarium?
Yes, Horseshoe Crabs are ideally suited to a reef aquarium environment with stable conditions and adequate water flow.

Brian Simpson –
The Horseshoe Crab arrived healthy and active. Water parameters were stable after setup, and the crab has been eating Gamma Foods regularly. It’s a unique addition to my reef tank and adds visual interest without causing disturbances.
Fiona May –
I’ve kept a Horseshoe Crab for three months now. It’s calm and active during the day. The feeding routine with Gamma Foods is simple and effective. I recommend it for experienced reef keepers.
Dominic Allan –
The crab has adapted well to the tank conditions. I noticed it exploring the rockwork and feeding on the food provided. The instructions for water parameters were clear and easy to follow.