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  L# Cardinal Tetras die with the lights off.
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SubscribeCardinal Tetras die with the lights off.
psionic001
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Small Fry
Posts: 1
Kudos: 1
Votes: 0
Registered: 15-Jul-2006
australia
Hi,
If I have my aquarium lights turnd off for more than say 8 hours, my Cardinal Tetras loose all of their colour and look like they are about to die. They drift about the tank with the current, often ending up caught in plants and under rocks etc.

Is this normal?

Thanks

Matt
Post InfoPosted 15-Jul-2006 18:05Profile PM Edit Report 
dan76
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Big Fish
Always Reading Posts
Posts: 343
Registered: 08-Jul-2003
male australia
if they are ok during the time when the lights are on , i would say that they are fine. a lot of fish change their markings depending on light or stress etc.
if they dont act normally during the day they might be sick. also how much current do you have in the tank , it could be too strong for when the fish are sleeping

cheers dan

OH TOLEEDY!
Post InfoPosted 16-Jul-2006 04:38Profile Homepage PM Edit Delete Report 
keithgh
 
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*Ultimate Fish Guru*
Posts: 6371
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Registered: 26-Apr-2003
male australia au-victoria
Depending on the lighting you have they will naturally change colour when the lights are off. Mine do swim around when there is other lights on in the room, I have never bothered to look when the room is in total darkness.

What else is in the tank?

Have a look in [link=My Profile] http://www.fishprofiles.com/forums/member.aspx?id=1935[/link] for my tank info

Look here for my
Betta 11Gal Desktop & Placidity 5ft Community Tank Photos

Keith

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Post InfoPosted 16-Jul-2006 04:51Profile PM Edit Delete Report 
Bob Wesolowski
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Mega Fish
Posts: 1379
Kudos: 1462
Registered: 14-Oct-2004
male usa
Psionic,

The change in cardinal coloration is a natural reaction. It is called sleep. It is nothing to be concerned about. You should see my discus drift during the night, color change is substantial and they drift into odd positions.



__________
"To steal ideas from one person is plagiarism; to steal from many is research."
researched from Steven Wright
Post InfoPosted 25-Jul-2006 08:09Profile PM Edit Delete Report 
Pammy
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Hobbyist
Posts: 148
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Registered: 30-Mar-2004
female usa
Yeah, they're just sleeping. My Cherry Barbs lose their color and striping when they sleep.
Post InfoPosted 26-Jul-2006 06:03Profile Homepage Yahoo PM Edit Delete Report 
fish_net
*******
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Hobbyist
Posts: 52
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Registered: 16-Aug-2004
female usa
yes its normal,one of my convicts does the same thing
Post InfoPosted 09-Aug-2006 03:35Profile Homepage PM Edit Delete Report 
Calilasseia
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Panda Funster
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Registered: 10-Feb-2003
male uk
Cardinals undergo a fairly radical colour change in the dark. They are not the only fishes to do this - for example, Beckford's Pencil Fishes have horizontal stripes in daytime, but oblique, almost vertical stripes at night!

If they're in a room that's been totally dark during the night, and you suddenly expose them to light, you'll see their night time colours. They probably won't appreciate the shock though!


Panda Catfish fan and keeper/breeder since Christmas 2002
Post InfoPosted 11-Aug-2006 04:57Profile Homepage PM Edit Delete Report 
terka27
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Hobbyist
Posts: 64
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Registered: 11-Nov-2003
female canada
last night i went to look at my cardinal tetras when it was still dark. they were all almost completely colorless..it scared me to death!. when the light was shining in this morning they were all back to normal. good to know this is normal!
Post InfoPosted 16-Aug-2006 21:42Profile PM Edit Delete Report 
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