Echinothrix calamari

Datasheet

General Description

The Banded Longspine Urchin, scientifically known as Echinothrix calamari, features a central black body adorned with long spines, some growing up to 9 inches in length. These spines exhibit striking bands of light and dark colors, with varying thickness and texture. In its natural habitat, this species tends to cluster in groups and retreats to rocky crevices during daylight hours, emerging at night to forage. Care must be taken when handling as its venomous spines can deliver a sting akin to a bee's.

Aquarium Suitability

The Banded Longspine Urchin is deemed suitable for aquariums but requires specific conditions for optimal health. It cannot tolerate copper-based medications and requires low nitrate levels in the water. Adequate rock formations and shaded areas in the tank mimic its natural habitat and provide essential shelter.

Care and Hardiness

A moderate level of care is necessary for the Banded Longspine Urchin to thrive in captivity. Monitoring water quality is crucial, as any deterioration might prompt the urchin to shed its spines. Regular feeding and a herbivorous diet for juveniles transitioning to carnivorous as adults are vital.

Reef Suitability

Considered reef-compatible, this species can coexist with coral and other invertebrates in a reef environment. Its peaceful temperament makes it a suitable addition to a reef tank, provided the necessary precautions against poor water quality are in place.

Aquarium Setup

A well-equipped aquarium for the Banded Longspine Urchin should have stable rockwork, shaded areas, and ample space for movement. Maintaining water parameters within the recommended ranges of pH 8.1-8.4, specific gravity of 1.023-1.025, and alkalinity (KH) of 8-12 is essential for its well-being.

Behavior

This urchin species tends to be peaceful and largely nocturnal, emerging at night to scavenge for food. Its spines serve as both a defensive mechanism and a tool for transporting food to its mouth, showcasing an intriguing aspect of its behavior.

Feeding and Diet

The Banded Longspine Urchin follows a herbivorous diet as juveniles, consuming algae primarily. As they mature, they transition into carnivores, preying on various invertebrates. Food can be strategically placed near or on its spines, allowing the urchin to transport and consume it.

Dimorphism

Dimorphism in the Banded Longspine Urchin likely involves visual differences in size, coloration, or spine structure between genders. As the bare information does not specify captive reproduction details, further research or observation may reveal additional insights.

Habitat and Distribution

In the wild, Echinothrix calamari is commonly found in the Indo-Pacific region, inhabiting coastal areas characterized by rocky substrates. Their preference for rocky crevices and the presence of other conspecifics suggests a social and gregarious lifestyle in their natural habitat.