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Yellow labridens and Gymnos

10 years 2 days ago #22037 by whetfish
Moved the gymnos out last night.  Moved in some JD that are slightly larger and some little guys to distract everyone.  The JD are really outgoing, which helps the labs feel more at home.  Hopefully there are enough bodies in there that the labs don't pick on each other.  The dempsey seem pretty ambivalent.  I gave the injured lab a fungus bath, since his tail was getting a little cloudy.  Tail is not cloudy today, but he's got a little while before i release him into the tank.  Need to get'em eating again too.

For size comparison:  The bigger fish turning is a JD, then two labs and little guys scattered.

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10 years 3 days ago #22014 by nuth88
Targets are good man....

Love the Boester Bell, It ties the tank together man....

Nuthman~

;D

"I guess that's the way the whole durned human comedy keeps perpetuatin' itself."

(The Stranger - 6/1998)

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10 years 3 days ago #22011 by whetfish
Thanks for the advice...I have a couple JDs that are slightly larger than the labs.  The JDs are about the same size as the gymnos.  I also have a couple hundred smaller JDs that could act as target fish.

I'll move the gymnos I have a few spots I could put them.

Here's the tank:

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10 years 3 days ago - 10 years 3 days ago #22008 by duanest
Because they were already established (as Scott pointed out), the Gymnos probably decided to exercise their self perceived squaters dominence.
But just as Knutson stated, when the Herichthys figured out that they are truely the tougher, they called the Gymnos bluff.
There is only one outcome putting comparitively mild mannered Gymnos with bipolar Herichthys....dead Gymnos.
I know....the above sounds way to anthropomorphic...but I believe it to be true.
Just another heads up though,  unless the labridens have something to vent their normal aggression on. I believe in a small tank, they will soon start on each other.
I put 6 small (<2") yellows in a 60 gal, and now only have 1. The dominent one that's still there, managed either kill, or to intimidate all the others into a bloating death. He now is able to stand down, similar sized Amphilophus labiatus, and a slightly larger dovii in a 150 gal tank. As long as your dempseys can't get the upper hand, I think Knutsons suggestion is very good, it could keep the yellows off each others back.

Finicky eater too.
Last edit: 10 years 3 days ago by .

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10 years 4 days ago #22006 by nuth88
Aaron~

IMHO, I would guess that, it's a Labridens aggression thing, Whatch for a hyper aggressive male trying to establish slot, suprising to me at that size, but not an Gymno El Norte type of Behavior. My Gymnos are much bigger and very chilax...

The El Norte of that size will not be aggressive in a tank they just moved to, Labridens are one of the most aggressive Hericthys complex, not as bad as the Blues, but aggressive none the less. Personally, I would slot the Gymnos back into the 10 alone, and add some of your Dempseys (equal size) to the Labridens. Just what I have experienced in the past.

Nuthman~

"I guess that's the way the whole durned human comedy keeps perpetuatin' itself."

(The Stranger - 6/1998)

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10 years 4 days ago #22003 by baldtaxguy
Replied by baldtaxguy on topic Yellow labridens and Gymnos
Bummer.  Never kept yellow labs.  Chris and Duane have real life tales of the aggressiveness of gymnos, so maybe some dynamic is getting triggered with the introduction of a second species.

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10 years 4 days ago #22001 by whetfish
I picked up some yellow labridens at the auction.  I put them in with some gymno El Norte which are slightly larger than the yellow labridens.  There has been some nipped tail fins on the yellow labridens.  Two days ago I had a near death labridens sorta twitching on the bottom(like he got knocked out)  He is now chilling in a net healing.  Tonight I added some water and some non-iodized salt(to heal fins).  An hour after the water change and salt there is a dead gymno.  Doesn't look like a sickness, no fins nipped, just dead.  My question is who did it? Why? What to do next?

Breif History:
7 gymnos were in a 10g(bare) for a while, all good, no aggression.  Auction happened.  Added labridens to gymnos.  Gymnos and labridens upgraded to a 30g breeder.  Added decor.  labridens with nipped tail fins.  Injured labridens.  Attempted to break up all kinds of sight lines after first injured labridens.  Dead gymno.

When i sit around and watch they mostly hide.  So i have no idea.  What should I do?  I do have some JDs that are a little bigger than the labridens that could add or not add to the mix.

I assume the labridens are being feisty but I haven't caught them in the act.

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