Common name: carrot-sponge

General information

Amphilectus fucorum, commonly known as the Furrow Clingfish Host Sponge, is a species of marine sponge found in the cold waters of the North Atlantic. This sponge is particularly interesting to hobbyists due to its association with the furrow clingfish (Apletodon dentatus), which uses the sponge's structure as a habitat. The sponge itself is encrusting, forming a mat-like layer over rocks and other hard substrates.

Care

Caring for Amphilectus fucorum in a home aquarium requires a stable environment with strong water flow and good water quality to mimic its natural habitat. It is a non-photosynthetic species, meaning it does not rely on light for nutrition but instead filters organic particles from the water. Regular feeding with fine particulate foods can help maintain its health.

Reproduction

Like many sponges, Amphilectus fucorum reproduces both sexually and asexually. In the aquarium, asexual reproduction through budding or fragmentation is most common, allowing hobbyists to propagate the sponge by carefully cutting a piece and attaching it to a new location.

Symbiosis

The symbiotic relationship between Amphilectus fucorum and the furrow clingfish is a fascinating aspect of this sponge. The clingfish finds refuge within the sponge's structure, gaining protection from predators and a place to lay its eggs. This relationship can be replicated in the home aquarium, providing a naturalistic and engaging display.

Habitat

Amphilectus fucorum is typically found in the intertidal zones to subtidal areas up to 50 meters deep. It thrives in colder waters ranging from the coasts of Norway down to the Iberian Peninsula and into the Mediterranean Sea.