Strange new visitors - Friends or Foes

[KRIEGER]

Hello all...have some new visitors in my 28 gal reef. Wondering if they're off-spring from my shrimps or some kind of parasite. They are the size of common ants, 6 legs, maybe some small claws...hard to tell... hang out at the top of the reef, about a dozen or so, see through, have long antannae, and just scurry about night and day - My crabs, snails, and urchins seem very interested in them - as in trying to eat them, but they are too fast to catch. The 2 shrimp I have show no interest in them. Any clue what they are and what I should do with them. Thanks

 

[animalzrok2]

any pics????

 

[KRIEGER]

I tried....but they are so small the camera wont focus on them....sorry....

 

[Sharklover]

Sounds like mabey anthropods have you seen those in your tank b4 cuz in mine they took a while to populate and now i dont really see them alot for some reason...