Could assassins be killing my fish?

  • We are currently upgrading MFK. thanks! -neo
again its not water quality. neons are not that delicate of a fish.
 
Okay, I agree that if your water quality was spot-on, (ammonia and nitrite at 0, nitrate below 20), then you could rule out water quality. But to keep fish in non-ideal conditions and then want to debate about the frailty of a particular species is a little useless. It could still be water quality. NO fish likes ammonia, especially being subjected to it over a period of 2 weeks.
 
true, but my levels are not far off. unless neons are very sensitive the water is not the problem. Now if they are hyper sensitive then yes it is an issue. now there is other minerals in my water that might have cause the issue, i.e. iron(my water does have high levels of this).
 
Yes, but they've been being subjected to ammonia, at some level, for 2 weeks. This would sicken any larger fish, and likely kill small fish. I understand that some fish are hardier than others, but expecting anything to live in toxic conditions for this long and live is a little crazy. Also, hardiness will vary from individual to individual depending on conditions during shipping, at the LFS, and in your aquarium, and the overall health of the fish. The only constant is water quality here, and yours is bad.
 
If this works for you, then that's fine, because, you're the one with the dying fish. I wouldn't want ammonia in my tank for any length of time, no matter what a chart says. If you feel you can rule it out, then that's fine, but since you've had these fish, you've had ammonia, because this is a new and uncycled tank that you added fish to. And since you've had them, they've been dying. To me, this seems like an obvious correlation. I hope you are able to find out what's wrong so that you can save the couple that are left.
 
i still think water quality, i just now went and checked all my tanks, all of them 0 ammonia 0 nitrite and between 5 and 20 ppm nitrate, ANY reading of ammonia or nitrite can and will kill fish, my newest 125 had a upswing in ammonia when i first started adding fish, all big hardy fish and they were stressed at just .25 for the week it went on, so, its not suprising that neons, renowned for there fragility and never ever ever reccomended for anything but the best and most well established tanks are all dying, get some cycle and some danios, wait a week, check ammonia and slowlly start to add the fish you want, any reading at all is death to fish
 
Lepisosteus platyrhincus;3580103; said:
again its not water quality. neons are not that delicate of a fish.
Depends who you are getting these fish from and how you yourself provide for these fish. A lot of neon tetras have been inbred to the point their quality diminishes. The neons I find in my local pet stores cannot even survive one night whereas cardinal tetras can despite the acclimation measures taken.

And it is impossible for assassin snails to obliterate healthy neons. I can understand a sick fish being eaten alive but not with healthy fish. It is not logical to me. Assassins are already slow as is when you attempt to feed them pond snails.
 
oh ok, thanks lupin. didnt even take in consideration about inbreeding.
gol, plz check my link. im not sayin that water quality(ammonia in perticular) but i am sayin it is unlikely. now because of inbreeding like lupin said it could be the issue. still doubt it but it is possible due to screwd up gene pool
 
I would just do a water change to see if getting rid of the ammonia would help. I wouldn't rule anything out without at least trying to change it first. Not to sound like a jackass, but if you come on here asking for advice, I would listen to it and try it before denying it as the reason.
 
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