Nocturnal Aquarium - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 16 Old 09-21-2010, 11:32 AM Thread Starter
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Nocturnal Aquarium

Hye guys, I just wondering what kind of fishes there are that are nocturnal or like it really dark. I was looking at Black Ghost Knife Fish and the Blind Cave Tetra and wondering what other fishes are in a similar situation where they are the most active in the dark. I was also wondering what kind of lighting would I use for a nocturnal tank as I would like to observe them but still keep them comfortable. I thought of little spotlights in the substrate that won't too strong but that may be too bright for them. Any suggestions for a way to observe them? If I did setup a tank like that, it would most likely be in the movie room where it is usually dark. Any ideas?
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post #2 of 16 Old 09-21-2010, 12:17 PM
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Even nocturnal fish need a day/light cycle, and that includes a minimum of about 8-10 hours of complete darkness...

You could do 8-10 hours of daylight, and 2 hours of 'twilight' (Just a few LEDs, like those pucks you can buyy at wal-mart) before and after the dark cycle if you really wanted to...

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post #3 of 16 Old 09-21-2010, 12:43 PM
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I have a solarmax light fixture that has 8 blue led lights to simulate moonlight. That allows me to observe night time behavior when I can't get to sleep myself.

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post #4 of 16 Old 09-21-2010, 12:50 PM
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I've heard of those...
Just waiting on the fish to tell us whether it bothers them or not. I'm wary of new technologies- I'll give it another year and see what people say.

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post #5 of 16 Old 09-21-2010, 01:50 PM
red lights are good.i think they can't see red

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4x1.5x1.5 planted tetras,harlequins,
otto,WMM,2 types of celebes rainbows,rcs,amano, bamboo,red ramhorns,MTS
3.5x2.5x2 flowerhorn,pleco
3x1.5x1.5 russel's lion,blue cleaner,sixline and leopard wrasse,maroon clown pair,green chromis,scorpion,tiger cowrie,turbo,lyretail anthias,jewel,anemone,star polyp,marbled and giant green mushi,zoa
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post #6 of 16 Old 09-21-2010, 03:24 PM
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If the enitre tank is nocturnal (the fish I mean), then very low lighting is best, like they do in public aquariums. Nocturnal fish appear fine with very subdued light (sort of dusk/dawn all day). A carpet of floating plants also works in two ways, by reducing the light entering the tank but still providing the benefit of live plants. Lots of wood or rock to create caves, etc. too. Nocturnal fish will always be reasonably active under such conditions.

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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 #7 of 16 Old 09-21-2010, 06:40 PM
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My Raphael cat I only see when the lights are off. Except lately he's been coming out when I feed the other fish in the evening when the lights are still on, grab a bite, then go back under his driftwood. I also drop him a wafer or two after lights go out before I go to bed.

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post #8 of 16 Old 09-22-2010, 03:24 AM Thread Starter
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ok thanks but what fish are available that are nocturnal?
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post #9 of 16 Old 09-22-2010, 05:39 AM
other then the 2 you sugested catfishes are mostly nocturnal.

5x2x2 aro,highfin bat,fei feng,ST,albino tinfoil,c.perch
4x1.5x1.5 planted tetras,harlequins,
otto,WMM,2 types of celebes rainbows,rcs,amano, bamboo,red ramhorns,MTS
3.5x2.5x2 flowerhorn,pleco
3x1.5x1.5 russel's lion,blue cleaner,sixline and leopard wrasse,maroon clown pair,green chromis,scorpion,tiger cowrie,turbo,lyretail anthias,jewel,anemone,star polyp,marbled and giant green mushi,zoa
2x1x1 nano sw shrimps
22 May 2012
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post #10 of 16 Old 09-22-2010, 08:03 AM Thread Starter
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ok thanks, any others?
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