Survival of the Fittest? - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 15 Old 09-15-2011, 07:15 PM Thread Starter
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So you think that adding tetras is worth a shot? If that doesnt work, what else could?
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post #12 of 15 Old 09-15-2011, 07:28 PM
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Well one issue with the head and tail light tetra is that they get too large for a 10g IMO.

They attain 2 inches full grown.

Honestly, I think you're pushing it for your tank size with 2 shoals of tetra. Id either have the neons or the cardinals if I were you. And I'd add 4-5 of whatever you choose to keep. Let them get settled and if you want to increase your group you can add 2-3 more.

This is just what I'd do. Your neons and cardinals are most likely stressed from being in such small numbers. This can cause aggression, disease, death, etc.

I dont have experience with Neon's or Cardinals in a 10g so maybe someone with more experience here can comment to help you out.
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post #13 of 15 Old 09-16-2011, 03:09 PM
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Hi brook, as others have said I think that you have two issues going on here which is causing problems. The first is that the both species of fish need to be in larger groups, along with the fact that both of these fish also really need to have a larger tank, 20 gallon being the minimum. I have a feeling that trying to add more fish within the current circumstances will continue to end with the same results. If you would like to keep both types of fish I would suggest in looking to upgrade your tank to at least a 20 gallon, if you spend some time looking on craigslist you should be able to find a good deal on a 20 gallon, sometimes you can even get at least a stand with it also. If you are unable to upgrade at this time, than my next suggestion would be rehoming the fish in the tank right now and choosing a species that will do better in the set up that you have right now.
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post #14 of 15 Old 09-17-2011, 10:54 AM Thread Starter
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Hey all...thank you very much for all of your input. I think I could have been a bit more descriptive though...I'm trying to get a school of either cardinal or neon tetras. I know that there is no way I can have a school of each. My apologies if that wasn't clearer...

Thanks
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post #15 of 15 Old 09-17-2011, 02:44 PM
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I'm in agreement with what has been posted. But I think there must be something here we are not catching. I can't believe that a couple neons or cardinals would kill an entire group of 5 new fish like the H&TL overnight. Something must be wrong in the water, so let's back up a minute.

You cycled fishless; can you indicate how you did this, i.e., with what and over what period of time?

And confirm that you added 2 fish each time. And when did they start to die off, in relation to this?

Are any substances going in the tank water, aside from conditioner? And which conditioner?

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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