All marine aquariums are populated by polychete worms.
Most of them live hidden and often show themselves only at night or when you feed your fish and corals.
If the corals or the Anthozo have traces of bite, it is possible that they have been attacked by polychetes.
It is then not to all delay and have a flashlight to examine the aquarium at night.
And if we immediately discover some of these annoying little worms, it is better to remove them from the aquarium before they can cause even more damage.
It is generally not useful to try to catch the worms using a tweezer, because they are then often cut in half - and each part can develop and form a new worm.
In addition, it is absolutely necessary to avoid grasping polychete worms with the hand, since small "bristles" can cause skin irritation that can persist for several days.
The simplest and most effective way to capture these worms is to use a polychete trap.