Most wrasses will munch on them but only a few actively seek them out as a food source
Arrow crabs will eat them as a primary food source but most likely will attack and eat critters and feather dusters that you want to keep too once the worm population is decimated
Coral banded shrimp will eat bristle worms too but not always and may attack and eat other smaller critters in your tank as well
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 My aquarium is nothing but a smorgasbord for my cats.....
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