Mermaid's Fan Plant
SAVE up to 30% on Select ORA Items SHOP NOW ›
Mermaid's Fan Plant
Due to variations within species, your item may not look identical to the image provided.
Mermaid's Fan Plant (Udotea sp.)

Quick Stats

Care Level Moderate
Lighting Moderate
Waterflow Medium
Placement Bottom
Water Conditions 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.023-1.025
Color Form Green
Supplements Calcium, Trace Elements, Iron
Origin Caribbean
Family Halimedaceae
What do these Quick Stats mean? Click here for more information


The Mermaid's Fan plant, a green calcareous algae found throughout the Caribbean, is used as a decorative plant in the marine aquarium. These plants have short stems that grow out of the substrate or live rock. These plants form a fan like leaf that is oval to round in shape. They are calcareous algae that deposit limestone (calcium carbonate) in their tissues.

The Mermaid's Fan plant is generally hardy in the right conditions, and few fish will feed on them. In addition to light, they require sufficient calcium to grow. They are not as tolerant of high nitrate or phosphate levels compared to some other algae. They also do not tolerate extensive pruning.

Approximate Purchase Size: 3" to 4"

Customer Testimonials

Courtney M Marysville , WA
Love these. I tucked them into the live rock and it adds a bit of color in my 125 gallon FOWLR tank without expensive corals my porcupine puffer may eat. Also, unlike other plants I've tried, the hermit crabs and snails in my tank don't touch this, which is great. No more buying lots of plants just to have them demolished by my fish and inverts.
1-1 of 1 testimonials

Bookmark and Share