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Discussion Starter · #1 ·
Newly stocked 75 with C. hara, L. Perlmutt, I. springerae, and M. msosbo (6 each). Everybody seems to be doing fine except the perlmutts are slowly dying or being killed off. Seems like there is another one missing every morning at feeding time. Down to 2 now. Suspects?
 

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How many days have you had them? Are they juveniles or adults? What are your test results for pH, ammonia, nitrite and nitrate?
 

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Are the perlmutts lurking under the surface or behind filter intakes or heaters?

Do they have sunken bellies?

I would do a 50% water change in any case.
 

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They are probably dying off because they are sick, or are less healthy and stressed by poor conditions. You just have to figure out what is wrong. Did you notice that the Perlmutts came out and ate normally?

It is unlikely that this is a murder mystery, juveniles are not that violent. There is no particular reason for the Haras to selectively bully the Perlmutt. Fighting does not happen for no reason, larger fish do not pick on smaller fish just to be mean, the smaller fish are of no threat, fish are not like humans. Most fish may pick on sickly fish that might be near death so they can eat them, something humans hopefully do not do.
 

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noki said:
They are probably dying off because they are sick, or are less healthy and stressed by poor conditions. You just have to figure out what is wrong. Did you notice that the Perlmutts came out and ate normally?

It is unlikely that this is a murder mystery, juveniles are not that violent. There is no particular reason for the Haras to selectively bully the Perlmutt. Fighting does not happen for no reason, larger fish do not pick on smaller fish just to be mean, the smaller fish are of no threat, fish are not like humans. Most fish may pick on sickly fish that might be near death so they can eat them, something humans hopefully do not do.
Plus one.
 

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Discussion Starter · #8 ·
noki said:
They are probably dying off because they are sick, or are less healthy and stressed by poor conditions. You just have to figure out what is wrong. Did you notice that the Perlmutts came out and ate normally?

It is unlikely that this is a murder mystery, juveniles are not that violent. There is no particular reason for the Haras to selectively bully the Perlmutt. Fighting does not happen for no reason, larger fish do not pick on smaller fish just to be mean, the smaller fish are of no threat, fish are not like humans. Most fish may pick on sickly fish that might be near death so they can eat them, something humans hopefully do not do.
They were not coming out and eating eagerly like all the other fish.

They are supposed to be F1's. I wonder if this could be a factor. Perhaps more sensitive to tank conditions?
 

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Discussion Starter · #10 ·
Only 2 left now. One is hovering near the out-take pipe. Looking a little wobbly. the other still seems ok. If the rest die off I'll still be left with hara, msobo, and rusty mix which I would be fine with. But should I be worrying about the healthy fish if this is some kind of disease? As of now the other species are all active, healthy and eating well.
 

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If you can isolate them, try that. Observe closely, but you can't really treat the tank since there are no symptoms to diagnose. Medication can do more harm than good if it is for the wrong illness.
 
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