05TurboS2K
New member
they can see my laser pointer 
diff kinda light?
diff kinda light?
red lights for night?
- Thread starter ryanpal
- Start date
stevelkaneval
New member
fish connot see the red light. i got a set of blue and a set of red moonlights from a fellow reefer, and i didnt wanna set up the red ones cause i liked the blue ones better. but when i had the blue ones on my fish wouldnt go to bed and none of the nightlife came out. then i hooked up the red ones and wow all the fish went to bed and all the worms and creepy crawlys came out, even the night feeding corals come out with the red light but not the blue. same can be said for amphibians,mosr insects,scorpians, etc. ect.
stevelkaneval
New member
lasers are different than a led or a flourecent light.
You pretty much can actually. It is not that advanced anymore. Our understanding of visual pathways, is quite sophisticated. Some fish have few enough visual neurons, that you can monitor all of them, by inserting a very small cannula or microelectrode. In more complicated visual pathways, there are various histological methods available. I don't know of any studies using these methods on reef fishes, although the methods have been around for a long time.
Also, as to the laser pointer, it is not necessarily that certain animals can't see red, it is that it takes more energy to excite photoreceptors using red light. A laser pointer is very high energy and would not be useful in the same way that lower levels of red light would be.
05TurboS2K
New member
.....ok that makes no sense man....
Rods/Cones in your eyes.....
cones pick up color, rods pick up light.
Your saing if you covered a 5,000,000 candlepower spotlight on a fox ...and put some red plastic infront of it they wont see it at all????
perhaps they just look at it like "*** IS THAT RED LIGHT OVER THERE" >>>>> AND THEN BOOM GET SHOT
just like the fish that doesn't care.
I'm sure the fox can see red light, its like dogs that can see red, they could still see the light, even if the color isn't picked up due to a cone deficiency.
Rods/Cones in your eyes.....
cones pick up color, rods pick up light.
Your saing if you covered a 5,000,000 candlepower spotlight on a fox ...and put some red plastic infront of it they wont see it at all????
perhaps they just look at it like "*** IS THAT RED LIGHT OVER THERE" >>>>> AND THEN BOOM GET SHOT
just like the fish that doesn't care.
I'm sure the fox can see red light, its like dogs that can see red, they could still see the light, even if the color isn't picked up due to a cone deficiency.
stevelkaneval
New member
if the animal cant see that colore wavelength and you change the lights colore wavelength then no the fox will not be able too see it.
05TurboS2K
New member
theres COLOR...and theres LIGHT
I think were confusing the two.
a human who can see NO colors and has no CONES or no use of em... can still see EVERY COLOR's LIGHT output.
I think were confusing the two.
a human who can see NO colors and has no CONES or no use of em... can still see EVERY COLOR's LIGHT output.
05TurboS2K
New member
the rods in the eye pick up light regardless of color as they are not affected by color, or this is at least how i remember learning it.
stevelkaneval
New member
then how come my colore blind grandpa CANT see the green light at an intersection? he can see yellow and red just fine.
horwitzs
Member
I think I remember seeing that also, but the impression I got was that is specific to very deep sea animals, that adapting over time have lost their sensitivity to red because the red spectrum does not reach the depth, so it is useless for them to be able to see it.
This would not apply to fish in the shallower water of a reef.
stevelkaneval
New member
whatever the real answer is i highly recomend that you get some red moonlights to see the nightshift in the tank. you will be suprised what you see with red that you dont see with blue.
Many reef fish don't have red cones and therefore may not perceive red specifically. However rods (not to mention other photoreceptors, melanophores and photo-sensitive ganglion cells etc..) may be stimulated by red light. The issue here is not the spectrum, but the intensity. Red light does not carry much energy and therefore more may be required to stimulate these cells. Rods for example tend not to be very sensitive to red light. However, intense red light, such as from a laser-pointer can certainly carry enough energy to stimulate rods, probably in just about any species :lol:
It might not make any sence to you but when I get home I'll take a few pis of my gun room and then you count the fox you see in the pic. When finished, Ask your self. Jow could a guy hide in a pile of brush out in the middle of the woods in the dark act like a hurt rabbit, then shoot that fox with out missing at 75 to 100 yrds. Think about it. any animal has reflex. If they are spooked or if something catches them off gaurd they will scatter. A sudden burst of light would surley count as "catching them off guard". Of course unless they can not see the change. Again bring back the real question in this poat. Can they see the change? Of course not the freq. is to low. You and I cant imagine this because we can see it. But to keep the comparisson fair between man and animal. They can see low freq. red as well as we can see infered.
So there!
Roy G. Biv
Premium Member
Forget the fox, I'd like to see a pic of you acting like a hurt rabbit.
<a href=showthread.php?s=&postid=11625628#post11625628 target=_blank>Originally posted</a> by Pmolan
Forget the fox, I'd like to see a pic of you acting like a hurt rabbit.
lol.... Ok you got me....lol I can squeal out through a fox call to get the noise down pat. but the hopping and frolicking in the weeds is too tough for me. (getting old)
Lucky
