Another odd hitchhiker

kung fu

Member
Ok...got another odd one in my tank that I've not been able to find on the usual 'Hitchhiker' pages...
At first this looked like a plant of some sort with thin, brown runners growing out of a piece of rock. Last week we noticed that the tips of the runners move on their own and seem to be catching plankton or copepods as they swim by. It's grown to about an inch in overall diameter now and is growing quickly, and I'm noticing it growing in two other parts of the tank...
This doesn't resemble any form of Aiptasia that I've seen - doesn't really look like an anemone at all. The runners don't look at all like 'tentacles' - they are all very thin and branch out in different directions - more reminiscent of a plant. It seems to be growing directly out of the rock...no tube or pedal base/disc that can be seen
At the tips of the runners some of them almost look like a

[hr]
, with now what appears to be fine hairs around the last few millimeters of the runner towards the tips. On some tips there are small opaque bubbles now.
The tips move in a random 'twitching' motion, and are obviously catching and feeding on something microscopic. While they seem to 'feed' on a 24 hour schedule, they seem more active in the day time hours.
Ideas???
Thanks...
Peace...
 

rmd8110

Member
Sounds like sargassum algae to me. Mine has been growing for like a month..gonna prune it back some today. It takes around 6 months or so before it will just die off and not come back. It usually starts right after you tank is finished with its cycle. Hope this helps..don't know for sure if that's what it is but it's sure sounds like it.
 

kung fu

Member
Well the timing is right...I'm just about at the end of my cycle (down to negligable ammonia levels, 0 trites, perhaps just barely 5ppm trates).
Would an algae feed in this manner?
Thanks...
Peace...
 

rmd8110

Member
I haven't really noticed it feeds. it does have kind of hair on it...i have a lot of circulation tho so i figure it's being moved...and stuff gets stuck in it. Like i said tho, it may not be the same thing..it just really sounds like it.
 
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