Zebra Reef Hermit Crab - Calcinus seurati
Zebra Reef Hermit Crabs are named so for the black and white bands that adorn their legs. This is one of the smallest hermit crabs in the aquarium trade and are good for algae control.
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.
|Common Name||Zebra Reef Hermit Crab|
|Scientific Name||Calcinus seurati|
|Max Size (in inches)||1 (excl. shell)|
|Min Tank Size (in gallons)||10|
|Specific Gravity Range||1.022-1.026|
|Armed Forces Americas|
|Armed Forces Europe|
|Armed Forces Pacific|
Ratings & Reviews
I needed some small inverts for a 5G nano that I have had up and running for the last 6yrs. Purchased two of these and was glad to see them immidiately begin moving around and cleaning up the layer of detritus and filamentous algae that had been out competing my coraline. Tank is back to its purple self.
Dwarf zebra crabs
I've tried Blue Leg crabs,Red Leg crabs, but my favorite are the Dwarf zebra crabs because they are always running around scavenging and trying on new shells.