Pleco light perception

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Elephino

Feeder Fish
MFK Member
Jun 30, 2008
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on the couch
Is there a color light, or even blacklight that I can turn on at night that wont disturb the plecos from their normal night time behavior?
 
Some people use LED or moonlights for this purpose.
 
I see there are moonlight kits for hundreds of dollars, then LED kits for $25.

From the pictures it looks like the LED kits are spotty, where the high dollar kits offer more of an even dispersion.

Is that the only difference?

How many of those LED's would it take to create a natural look in a 6' 125?
 
I've got those little red LED spotlights on my (2) Royal Panaques' tank in the bedroom. They're still as statues until I turn their red light on and shut off the room light at night & feed them. Then they scurry around like little mice. I read somewhere that catfish can see a broader range of colors than we can (I don't know). It doesn't seem to me they can see the red light at all.
 
So red is a shorter wavelength light, would that make the Royal Panaques a class D fish?

OK, nobody probably got that......................If you did speak up about your sub amp.:headbang2

I wonder if other fish see a different part of the spectrum than we as humans do.

Strange how the blue colors associated with the moon are on the other end of the light spectrum.

http://www.usbyte.com/common/approximate_wavelength.htm
 
I should've bookmarked the article, I'm bad about not saving them and I always need them later. But yes-it said different fish see an entirely different spectrum of light than we do. They were discussing the cones in their eyes (?). I also read an article that Oscars have such excellent eyesight they use them as testing. I knew that though, my Oscars can see me waaaay across the room.
 
Cuz i didn't see my plecos most of the time, i tried some stuff with the light.
I put 6 LED-spots right above the stream of bubbles out of my air stones.
This creates white dispersive light,and stop the beamy effect of the LED's but was not enough to actually get them out of hiding.I was at my neighbours place and saw a good idea (which i took and made my own).He used refrigerator-bulbs(15W) on top of the tank.I used 2 and placed the on 2 pieces of wood, so you don't get direct light into the water. Put a dimmer on them, and out they came. Yesterday I watched the 4 of them at once, which was NICE!!! First time. My Xingu new polkadot came to eat in the open , it took me 6 months of waiting and now he finally comes out.
 
I run dawn/dusk cycle w/a small 20w Actinic Flour. The plecos and cats all come out.
 
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