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Re: [APD] Re: strange "things"

At 11:20 PM 4/13/2004, you wrote:

Tim Walker asked:

> Hmmn, they [hydra] sound cool. Not bad for the fish?

I never noticed any discomfort in my fish, but the green hydra I had
to deal with stayed pretty small.  The largest I ever saw was just
over 1/4" (6mm) including its tentacles.  I suspect my regular use of
a diatom filter at the time kept their food supply limited, and they
died off after a few months.  I've heard of hydras as long as 1/2"
(13mm) minus the tentacles, so it's not hard to believe they could
cause trouble.
Chuck Huffine
Knoxville, Tennessee

The biggest concern i've ever heard for hydra problems usually occures in breeding situations. A colony of hydra can wipe out an entire batch (several hundred) early freeswimming young fish. Have heard stories talking to a few local breeders about this happening in the past after reading an article on it in the club magazine.


Regards Berne Kairunas Metro Detroit Aquatic Plant Supply - www.mdaps.com ------------------------------------------------------------------------------------------------------------------------- Proud Executive Board Member & Webmaster Greater Detroit Aquarium Society http://www.greaterdetroitaquariumsociety.com
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