Thus far, someone, usually Fluff has ID'd all my little animals. Thanks folks. 8) However, I have searched high and low for this next little thing and can't find a pic of it. Nor can I get a pic of one from my tank. They seem like little Hydroids. There was only one that I saw, swimming with the motion of a Jellyfish. Cylindrical in shape and swims with a convexing and concaving motion. Like a diaphragm on an air pump. Semi translucent, more white in color though. These were in the water of someone that I bought some fish and rock from. I am just worried they are pests. I allready have the biggest Aipastia ever. 8O