Odd number in school of tetra? (glowlight for example) - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 9 Old 09-12-2007, 01:37 PM Thread Starter
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Odd number in school of tetra? (glowlight for example)

Saw this quote on Drs. Foster and Smith

"The Glowlight Tetras are a schooling fish and will do best if kept in odd numbers of 5 or more."

Is there a reasoning behind this odd number? I just recently got 8, and I do notice one sorta doesn't hang out with the rest is it some weird genetic thing they like odd numbers?
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post #2 of 9 Old 09-12-2007, 02:52 PM
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I have never seen anything baout having an odd number of fish in any school of fish and I could not find anything that backs that up. It would be very odd for it to be true because the fish have no way of knowing how many are in a group unless the idea is to prevent pairing up together in which case an odd number would guarantee that they could never all pair off and it would make sure that some type of competition would occur. Tis assumes that glowlights pair off which is another thing I have never seen about any tetra
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post #3 of 9 Old 09-12-2007, 03:57 PM
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I have heard mentioned in the past that schooling fish are best kept in odd numbers, and that for some reason they will be more active when kept this way. I've never seen any evidence to support it, and I think it's just a myth.

ʎɐqǝ uo pɹɐoqʎǝʞ ɐ ʎnq ı ǝɯıʇ ʇsɐן ǝɥʇ sı sıɥʇ
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post #4 of 9 Old 09-12-2007, 05:02 PM
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heck, i went from 14 to 7, and they are all odd!! <rimshot>

ive had both even and odd numbers of glowlights, even if it WAS a supported fact id still find it silly :)

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post #5 of 9 Old 09-14-2007, 11:03 PM
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I've heard that loaches should be kept in odd numbers because it prevents them from getting into a situation where the fish form aggression pairs, where one fish always beats on the same other fish.
I could see it working the same way with tetras, though being less necessary. In my 55 gallon tetra tank, I have diamonds, glowlights, flames, black neons, and long finned blacks. Most of the schools are even numbers, some of them are odd, and I don't see any difference in activity levels on that basis.

Logic is only the beginning of wisdom
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post #6 of 9 Old 12-25-2007, 08:32 AM
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i have 4 neons and 3 always hang out together. It may be a different one everytime as i cant tell them apart. Just figured id toss my experience in haha.
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post #7 of 9 Old 12-28-2007, 12:12 PM
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HHHMMMMM.......

Sounds Odd to me ! LOL Someone had to say it.
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post #8 of 9 Old 01-02-2008, 01:53 PM
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I have 7 Neon Tetras and they dont seem to have any problems or differences from my 4 Flame Tetras... I say a myth... It could have just been a preferance of sombody and it eventually spread like fire in the aquarium world.

Bow down to MTS!!!!!!!!
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post #9 of 9 Old 06-30-2008, 03:05 PM
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Personally my fish can never keep odd numbers, except for my 3 Scissortails that are about 5 years old. All other shoaling fish always manage to stay at even numbers in my tanks.
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