Common name: Pineapple Sea Urchin

General information

The Pineapple Sea Urchin, scientifically known as Echinus melo, is a visually striking species that adds a touch of diversity to any marine aquarium. Its common name is derived from its distinctive appearance, which resembles a pineapple or melon due to its large, rounded test (shell) and prominent spines. These urchins are known for their bright coloration, which can range from red to purple, and their spines are often banded with contrasting colors.

Care

Caring for Echinus melo requires a well-established aquarium with plenty of live rock and a stable environment. They are herbivorous and graze on algae, so it's important to maintain a supply of natural algae or provide supplemental feedings of seaweed or prepared algae sheets. They are sensitive to water quality, so regular water changes and monitoring of water parameters are crucial.

Reproduction

In the wild, Pineapple Sea Urchins reproduce by releasing gametes into the water column, where fertilization occurs externally. In the aquarium, breeding is less common, but with optimal conditions, it is possible to observe spawning behavior.

Symbiosis

While not known for specific symbiotic relationships like clownfish and anemones, Echinus melo plays a role in the ecosystem by controlling algae growth, which can benefit other tank inhabitants by maintaining a clean environment.

Habitat

Echinus melo is typically found in rocky subtidal zones and is adapted to cooler water temperatures. They are native to the Northeast Atlantic, from the British Isles to the coast of Morocco, including the Mediterranean Sea.