Common name: bristly crab

General information

The Hairy Crab, scientifically known as Pilumnus hirtellus, is a small species of crab that is often found in the marine aquarium trade. Its body is covered with fine hairs, which gives it its common name. These crabs are known for their scavenging habits and can be beneficial in a reef aquarium by consuming detritus and uneaten food, thus helping to maintain water quality.

Care

Hairy Crabs are relatively easy to care for in a home aquarium. They require a tank with plenty of live rock and hiding places to feel secure. They are not picky eaters and will scavenge for food, but it's important to ensure they receive a balanced diet that includes meaty foods and algae.

Reproduction

In the wild, Pilumnus hirtellus breeds during warmer months. In captivity, breeding is less common but can occur if conditions are right. The female carries the fertilized eggs under her abdomen until they hatch into larvae.

Symbiosis

While not known for any specific symbiotic relationships, Hairy Crabs can coexist with a variety of tank mates. They are generally peaceful but may prey on small, slow-moving fish or invertebrates if food is scarce.

Habitat

Hairy Crabs are found in a range of marine environments from rock pools to shallow reefs. They are adaptable and can thrive in various conditions as long as they have access to hiding spots and a steady food source.