Common name: Red Sponge

General information

The Red Sponge, scientifically known as Phorbas amaranthus, is a striking marine sponge species known for its vibrant red coloration and volcano-like shape. This sponge is not only a beautiful addition to the reef aquarium but also plays a role in the natural filtration of the tank by processing dissolved organic matter.

Care

Phorbas amaranthus requires a well-established aquarium with stable water conditions. It thrives in moderate to low light and requires a moderate water flow to deliver nutrients and remove waste. It's important to avoid placing it in direct high flow as this can cause physical damage. The Red Sponge absorbs nutrients directly from the water, so supplemental feeding is not typically necessary, but it can benefit from occasional feedings of plankton or dissolved organic foods.

Reproduction

Sponges like Phorbas amaranthus reproduce both sexually and asexually. In the aquarium, asexual reproduction is more common, where the sponge can regenerate from fragments that break off. Sexual reproduction involves the release of sperm into the water column, which then fertilizes eggs in other sponges. However, this is rarely observed in home aquariums.

Habitat

Phorbas amaranthus is found in the Atlantic Ocean, particularly in the Caribbean Sea. It typically resides on reef slopes and overhangs where it can filter feed effectively without being exposed to excessive currents or sedimentation.