kylekody said:My local pet store owner said when bristle worms get big big more like 6+ inches it is possible for them to go after bottom dwelling fish. If you have tons of bristle worms like I use to, leave a small piece of silverside along he side of the tank and come look at like 1 or 2 am after lights are off and Itll be covered in worms. Pretty gross looking!
Uneaten food,fish waste.They are good scavengers for a tank, but if your over run with them then your more than likely overfeeding your tank.what is their food source?