oh really, amphiprion? that's something to consider for sure, as i think they run about 20 bucks a piece here in the heartland. that last thing i want to do is buy my horses an expensive snack.
If they are remotely small enough, they will attempt to eat them. They even tried to eat ghost shrimp that wouldn't fit in their mouths (about as big as a sexy shrimp). I know they also ate a small goby I used to have, too, but it was tiny.