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sandipan_ece
Regular Poster on IAH
Joined: Sep 15, 2007
Posts: 537
Location: kolkata (kalyani)
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 Posted: Tue Oct 14, 2008 12:24 pm Post subject: Fins turn dark in low light! |
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i keep 4 juvenile discus in a 22 gallon tank with sponge filter and airstone.
I have noticed that their fins turn blackish in colour when the room is dark. This i mostly notice in the morning. Normally during the day and evening time when the room light is ON, they seem to be perfect. But whenever the room light is low they seem to darken their fins! Is this normal? Or is this a problem?
i am waiting for your valued opinion. |
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Kaushik
Committed Member of IAH
Joined: Sep 11, 2007
Posts: 2059
Location: Ujjain(MP)
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| Posted: Tue Oct 14, 2008 12:38 pm Post subject: Re: Fins turn dark in low light! |
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Dear Sandipan
First of all Subha Vijaya Dashami.
Its very natural for every fishes not only discus to change colours in dark because they have the natural tendency to camouflage, thus they save themselves from night predators.Nature itself is a big test lab.
Regards
Kaushik |
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Discusolic
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Joined: Jul 04, 2007
Posts: 1039
Location: Mumbai ( Dombivili )
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| Posted: Tue Oct 14, 2008 12:44 pm Post subject: Re: Fins turn dark in low light! |
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Sandipan ,
When there is overhead light on discus tank , Discus feel more secure and hence stress free , no darking . When they are under stress , sometimes they becomes darker . you need to observe them closely .
Do they turns darker after WC ?
Thanks |
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sandipan_ece
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Location: kolkata (kalyani)
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| Posted: Tue Oct 14, 2008 3:34 pm Post subject: Re: Fins turn dark in low light! |
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| They turn black when there is LOW LIGHT condition for a long time. |
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Nanu
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Joined: Feb 14, 2007
Posts: 986
Location: Was Pune Now Bhopal :-)
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| Posted: Tue Oct 14, 2008 5:11 pm Post subject: Re: Fins turn dark in low light! |
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^^ Thats just natural camouflage. Don't worry about it.
The trouble is when they are dark in Bright light too. |
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