White-spotted Hermit Crab - Dardanus megistos

SKU: 216124
Manufacturer: That Fish Place
MPN: F93 0045 0136

This item is currently out of stock

Add product to cart backorder. A customer service representative will contact you regarding your order

Inventory is real time and can be impacted at any time.

RETAIL STORE ONLY, not available for shipping. Call to confirm availability and price.

Out of Stock


The White-spotted Hermit Crab (Dardanus megistos) is a large, carnivorous hermit crab. It has hairy red legs covered with white spots with black rims. This hermit will prey on smaller inverts and fish and will not control algae. They are best kept in a species-only tank or a tank with larger fish. The White-spotted Hermit Crab has many other common names and may also be referred to as the Spotted Hermit Crab, Hairy Hermit Crab, Shell-Breaking Reef Hermit or Strawberry Hermit Crab.

Most hermit crabs are scavengers. Some smaller hermit crabs will feed on algae like nuisance hair algae while larger hermit crabs are scavengers and carnivores. Most hermit crabs are opportunistic - they will not actively hunt for a fish or active invertebrates but will prey on sick, dead, or dying individuals. Only the larger hermits like those from the genuses Aniculus, Dardanus, Peguristes, and Petrochirus are a real threat to healthy, larger tankmates or to corals. Calcinus, Clibanarius, and Paguristes are some of the most common "clean-up crew" hermit crabs for algae control and to eat leftover foods and detritus. Hermit crabs that are underfed are also a greater threat to tankmates like snails and other invertebrates.

Hermit Crabs have soft abdomens and use empty snail shells to protect their bodies. As with other crustaceans, hermit crabs must molt to grow. When they molt, they crawl out of their shell homes and shed their own hard shell to grow larger. As they grow larger, they need to find new, larger shells in which to live. Provide extra larger shells in the aquarium for the hermit crabs to move into. Hermit crabs without homes may sometimes make their own by killing the snail inside, or they may molt before they have a new shell, leaving them extremely vulnerable to predators.

Crustaceans benefit from iodine and mineral supplements to help form a healthy, hard exoskeleton. Regular water changes with high quality salt mixes usually provide enough, but extra supplements may be needed in reef tanks or in tanks with heavy invertebrates loads that use up iodine and other minerals rapidly. If water changes with new, fresh saltwater are not done regularly, the minerals also get depleted and nitrates accumulate and can also be detrimental to crustaceans and other invertebrates.


F93 0045 0136
That Fish Place
Common NameWhite-spotted Hermit Crab
Scientific NameDardanus megistos
Reef SafeNo
Invert SafeNo
Community SafeNo
Max Size (in inches)8 (excl. shell)
Min Tank Size (in gallons)55
pH Range8.0-8.4
Temperature Range75-82
Specific Gravity Range1.022-1.026
DietCarnivore, Scavenger
Internal Id

State Restrictions
Armed Forces Americas
Armed Forces Europe
Armed Forces Pacific
Puerto Rico


Ratings & Reviews

2 reviews

  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

Great hermit crab


Colorful, active, hardy, fun to watch him climb over everything

Great Cleaner For FISH ONLY!


He or she's very cute and tends to be more active at night. Ever since I got it, it's been keeping my tank really clean. It eats all the leftover fish food and cleans up all the fishes mess. I have two dwarf hermits and some fishes before I got him, and I'm not sure if he's a threat to them or not. It doesn't seem to care about them.