Alien life forms in tank

[danam770]

Can anyone help me identify some weird critters that showed up in my tank? They are made of a bubble ending in a couple of tentacle-like legs. They crawl on the glass and advance by extending the bubble. They can also swim by pulsating the bubble. They are white, grow to be about 1/4 in. Originally I noticed 4, which later on disappeared and an army of babies - looking like miniature adults, about 1 mm., appeared. I have no clue what they are.
Thanks for any suggestions.
Dana

 

[jonboyb]

Sounds like jellies.

 

[bobz]

Maybe a form of hydroid? Check this link to see if these look similar:
http://images.google.com/images?ndsp=18&um=1&hl=en&rlz=1T4GPEA_enUS298US298&q=hydroids&start=36&sa=N">http://images.google.com/images?ndsp=18&um=1&hl=en&rlz=1T4GPEA_enUS298US298&q=hydroids&start=36&sa=N</a>

bob

 

[stacy22]

Possibly a planarian.

 

[derek_s]

stacy22;259896 wrote: Possibly a planarian.

That's what I was thinking as well.

 

[danam770]

I don't think they are planaria. The hydroid link did not really give me anything that looked similar. I am inclined to think they are related to jellies, but that's about as close as I can come. If they grow a little bigger, I will try to get a picture and post it. They sure do multiply fast, though.

 

[flyingarmy]

Definitely Aliens.......

 

[brazilian]

my next door neighbor has a alien form....lol