Common name: Tube Anemone

General information

The Tube Anemone, Cerianthus membranaceus, is a striking marine invertebrate known for its long, tube-like structure and an array of tentacles that resemble a flower in bloom. Unlike true anemones, it belongs to the order Ceriantharia and is not a reef-building species. Tube Anemones can come in a variety of colors, including shades of purple, brown, green, and orange, adding a vibrant touch to any aquarium.

Care

Tube Anemones require a sandy or fine rubble substrate in which they can anchor their long, tube-like body. They prefer moderate to low lighting and moderate water flow. Feeding should consist of meaty foods like chopped fish, shrimp, or prepared foods for carnivores. It's important to ensure that food reaches the tentacles, as they will capture and consume it directly.

Reproduction

In the aquarium, Cerianthus membranaceus rarely reproduces, but in the wild, they can reproduce both sexually and asexually. Sexual reproduction involves the release of gametes into the water column, while asexual reproduction occurs through pedal laceration, where new individuals form from pieces of the pedal disc.

Symbiosis

While not known for hosting fish or other symbiotic relationships common to reef-building anemones, Tube Anemones may occasionally provide shelter to small invertebrates or fish seeking refuge among their tentacles.

Habitat

Cerianthus membranaceus is found in the subtidal zone, often burying itself in soft substrates. It is widespread in various marine environments, from shallow waters to depths beyond typical recreational diving limits.