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And they usually won't retract when startled.Looks like feather dusters, just make sure the stalks are not brown or the feathery stuff is brown as those can be colonial hydroids and those are a nuisance.
Do they growFeather dusters. Cool!
Blow a little water at them. See if they close up.
Yup those are a hydroid. Putty and glue has always worked well for on those.
Is this what you mean by brown tube/brown polyp? I was thinking these might be Aiptasia, but the entire colony pictured is about the size of a US dime / nickel. If these are the hydroids, is there a good predator? My peppermint shrimp ignores them (but it may just be a picky eater, right?).
Thanks,
Bryan
Lol. Yea I was just looking at that one again!You know I was quick to PM Barney and beg him for that picture Salty!
Nice shot!
Is this what you mean by brown tube/brown polyp? I was thinking these might be Aiptasia, but the entire colony pictured is about the size of a US dime / nickel. If these are the hydroids, is there a good predator? My peppermint shrimp ignores them (but it may just be a picky eater, right?).
Thanks,
Bryan