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4 answers

Actually, they are probably hydra. I had some once. Here's a pic http://www.nature.ca/rideau/b/images/hdrchrs_sml.jpg and another http://www.fishieforums.co.uk/picupload/431b35fedb201.jpg

They won't harm larger fish, but you can take the rock out and scrub em off. By the way, they are relatives of the jellyfish :D Neat, huh?

2006-09-08 14:16:03 · answer #1 · answered by Amanda 6 · 0 0

Ask Sigourney Weaver. She did a good job on creatures like that in the Alien movies.

2006-09-08 11:01:26 · answer #2 · answered by Anonymous · 0 1

Algaecide.

2006-09-08 11:00:16 · answer #3 · answered by da_hammerhead 6 · 0 0

it was probably algea. and i think it got worst and now its a fungus. get an algea eater fish and your problem should be solved. and there's tablet for getting rid of algea u can try that too.

2006-09-08 11:50:15 · answer #4 · answered by hmalik 1 · 0 0

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