Keeping them well fed will minimize the chances of them sampling anything you don't want them to eat.
The key word there is minimize. It will not eliminate them as my pair proved
Well I am hoping that you had a rare pair....
All the reading I have done on crosshatches labels them as peaceful....
Lets hope I get a peaceful pair.....
I have a pair and they are amazing very active fish with very healthy appetites
They havent attacked any small fish in my aquarium or shrimp for that matter.
If you want to see pics and videos of them check out my thread under large reef tanks http://www.reefcentral.com/forums/showthread.php?t=1726744