Common name: Branched cup coral

General information

Blastomussa merleti, commonly known as Blasto or Pineapple Coral, is a species of large polyp stony (LPS) coral that is popular among reef aquarium enthusiasts for its vibrant colors and ease of care. This coral is characterized by its round, fleshy polyps that extend from a stony base, giving it a distinctive, puffy appearance. The polyps can display a variety of colors, including red, green, purple, and blue, often with contrasting centers or 'mouths' that add to their visual appeal.

Care

Blastomussa merleti is considered a hardy coral that can thrive in a range of lighting conditions, from moderate to low. It prefers indirect lighting and moderate water flow to prevent sediment from settling on its polyps, which can hinder feeding and growth. This coral benefits from supplemental feeding of microplankton or finely minced meaty foods, which can promote faster growth and more vibrant coloration.

Symbiosis

While not known for hosting other organisms like some corals do, Blastomussa merleti can contribute to the overall diversity and balance of a reef aquarium by providing shelter and microhabitats for small, beneficial invertebrates.

Habitat

Blastomussa merleti is found in the Indo-Pacific region, typically in shallow reef environments. It often inhabits lower light areas of the reef, such as under overhangs or in crevices, where it can avoid intense direct sunlight while still receiving the nutrients and light needed for photosynthesis.