Common name: Palythoa caesia

General information

Palythoa caesia, commonly known as Blue Mat Zoanthid or Blue Zoanthid, is a species of colonial anemones that are part of the Zoanthidae family. These zoanthids are sought after for their striking blue coloration and ease of care, making them a popular choice for reef aquariums. They are known for their hardiness and ability to adapt to various lighting conditions, which contributes to their popularity among hobbyists.

Care

Blue Mat Zoanthids are relatively easy to maintain, making them suitable for beginners. They thrive in moderate lighting and water flow, which helps to keep their symbiotic algae, zooxanthellae, healthy and vibrant. It's important to provide them with stable water conditions and to avoid placing them in direct, high-intensity light as this can cause stress. Regular feeding with zooplankton or finely minced seafood can promote growth and color intensity.

Reproduction

Reproduction in Palythoa caesia occurs both sexually and asexually. Sexual reproduction involves the release of gametes into the water column, while asexual reproduction is more common in the aquarium setting through budding or division. This allows hobbyists to easily propagate these zoanthids by carefully dividing the mat and attaching the fragments to new substrate.

Habitat

In the wild, Palythoa caesia is typically found in shallow reef environments where it forms extensive mats on the substrate. These zoanthids are adaptable and can be found at various depths, often in areas with moderate water movement that facilitates the delivery of nutrients and removal of waste products.