Genus
Common name: Ragworms
Scientific name: Nereis
Nereis is a genus of polychaete worms, commonly known as ragworms or sand worms. They are often found in marine environments from tidal zones to much deeper waters. These worms are characterized by their segmented bodies and numerous bristles, which aid in locomotion. In the reef aquarium, they can serve as a natural part of the clean-up crew, helping to break down detritus and aerate the substrate. However, some species may grow large and could potentially become predatory, so it's important to choose species that are suitable for the tank's inhabitants.