Common name: Blueband Hermit Crab

General information

The Blueband Hermit Crab, Calcinus californiensis, is a colorful and active member of the hermit crab family found along the Pacific coast of North America. Its distinctive blue bands on the legs and the antennae make it a visually appealing addition to the marine aquarium. This species is known for its scavenging habits, helping to keep the tank clean by consuming detritus, leftover food, and algae.

Care

Calcinus californiensis is relatively easy to care for, requiring a tank with plenty of live rock and hiding places. They are not aggressive and can be kept with a variety of tank mates. It's important to provide a selection of empty shells of various sizes for the hermit crab to move into as it grows.

Reproduction

In the wild, hermit crabs reproduce by releasing eggs and sperm into the water column, where fertilization occurs. In the aquarium, breeding is less common, but with optimal conditions, it is possible to observe larval stages.

Symbiosis

While not involved in the classic symbiotic relationships seen in some marine species, hermit crabs do play a role in the cleanup crew of the aquarium, indirectly benefiting other inhabitants by maintaining water quality and reducing detritus.

Habitat

The natural habitat of Calcinus californiensis includes rocky shorelines and tide pools where it can find plenty of food and appropriate shells for housing. In the aquarium, replicating this environment with live rock structures and a sandy substrate can provide a suitable and enriching habitat.