Hmmm...It appears that I have what look to be hydra in my 15g A. borelli tank. These guys are small, less than a quarter inch. Good, bad, or indifferent? I don't know how they could have came in, but the tank has been set up for about 6 months and I just noticed them today. I thought they might have been hair algae until I saw a couple attached to a snail. And upon close observation, I noticed them moving back and forth in an area without much current. They all appear to be located near the top of the tank, close to the water line. Currently searching, without any luck, for info online. Thanks in advance, Ken ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!