My poor lonely neons! - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 14 Old 01-27-2013, 12:36 PM
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I didn't know the time line or reasons... yah, sounds like some bad luck.

It might be worth while going with a different fish altogether. I've never heard anything other than neons being prone to health issues.


Total years fish keeping experience: 7 months, can't start counting in years for a while yet.

The shotgun approach to a planted tank with an LED fixture

Small scale nitrogen cycle with a jar, water and fish food; no substrate, filter etc
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post #12 of 14 Old 01-27-2013, 02:01 PM Thread Starter
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Ye bad luck is the only thing I could put it down to! Except the bout of white spot all conditions have been the same each time.

Its a 50gal tank so there is other stuff in there too, I got another 12 today and they are a lot happier now!
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post #13 of 14 Old 01-27-2013, 04:08 PM
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Keep a close eye on them, as "loneliness" is not likely the issue.

First on the species, there are four closely related species in the genus Paracheirodon. The neon tetra is P. innesi, the cardinal tetra is P. axelrodi, and the false or often termed green neon tetra is P. simulans. The fourth species which Heiko Bleher discovered in 2006 has as yet not been described and named, and you will almost certainly not find this fish anywhere [see profile of the neon for more on this]. These are distinct species.

Now, the neon tetra itself has a couple of colour varieties developed presumably by selective breeding. There is a "gold" neon, and I think an albino, and perhaps another or two. Whatever, these are all the same single species and have the same requirements, etc.

The Green or False Neon is a distinct species (Paracheirodon simulans) as I mentioned above, and it is very sensitive to water parameters and conditions, being wild caught. Genetically it is closer to the cardinal than the neon, as it explains in the profile here.

To the health issues. Neons have been commercially raised for decades now, largely in outdoor ponds in Florida and SE Asia, and sometimes in tanks. It is well known that the fish have weakened considerably, often said to be due to the excessive inbreeding. This happens with almost all fish that are commercially raised. There is no influx of new genes as would occur in the wild.

This is a soft water fish, and regardless of generations of commercial breeding, the fish still requires soft water to be at its best. I suspect this plays a role in all this.

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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post #14 of 14 Old 02-07-2013, 02:07 AM
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I have a small bunch of 4 Cardinal Tetras that were cohabitating with 2 beautiful bloodfin tetras. These Cardinals were very skittish and would hide behind rocks and plants every time I approached the tank. Their red color was washed out and they didn't look very good. I performed a 40% water change and their color began to improve.
About a week ago, I acclimated 6 Orange Von Rio tetras. The very same day the Von Rio tetras were acclimated, the Cardinals began schooling with them and coming to the front and center of the tank. Their behavior changed dramatically and their color is absolutely fabulous now! They really like all of their brothers/sisters.

Anyone else out there have experience with Von Rios (flame tetras)?
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