Is there any way to tell good/bad nudi's apart look at pics and alot of them look the same. Basically i picked up a cheap zoa frag today and noticed a little hitchhiker. trying to decide whether or not to throw it in tank. kinda fig if i found a nudi on some zoas prolly the bad kind any help appreciated ( frag was about 10 polyps free floating)

will try to get a photobucket or something set up in next few days so i can post pictures.