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Laser Pointer Safe to use with fish?

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Subject Author Date
Laser Pointer Safe to use with fish? Ann R 05-04-2005
Posted by Ann R on May 4, 2005, 8:00 pm
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Is it safe to use a red laser pointer for the tank? I'm getting tired of
saying to hubby "See the shrimp? Ok - see the knob next to him.. Now go
straight over to the little hole in the rock and down about an inch..." It
would be much easier to use the pointer but I don't want to disturb the
critters.

--
Ann R



Posted by CheezWiz on May 4, 2005, 9:00 pm
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The glass and salt water of the tank should render a laser pointer harmless.
It would take quite a bit of staring into the beam to cause any damage to
the rods and cones of any creature.
At the low power put out by publicly available laser pointers, most are very
safe in that respect..
Modified output models are a different story.. (green + Ebay)

I love using mine to play with my female clown, she is very diligent to
chase the red dot off of her anemone and around the tank..!

CW

> Is it safe to use a red laser pointer for the tank? I'm getting tired of
> saying to hubby "See the shrimp? Ok - see the knob next to him.. Now go
> straight over to the little hole in the rock and down about an inch..."
> It would be much easier to use the pointer but I don't want to disturb the
> critters.
>
> --
> Ann R
>



Posted by Ann R on May 4, 2005, 9:18 pm
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Guess what hubby's getting for mother's day!

--
Ann R
> The glass and salt water of the tank should render a laser pointer
> harmless.
> It would take quite a bit of staring into the beam to cause any damage to
> the rods and cones of any creature.
> At the low power put out by publicly available laser pointers, most are
> very safe in that respect..
> Modified output models are a different story.. (green + Ebay)
>
> I love using mine to play with my female clown, she is very diligent to
> chase the red dot off of her anemone and around the tank..!
>
> CW
>
>> Is it safe to use a red laser pointer for the tank? I'm getting tired of
>> saying to hubby "See the shrimp? Ok - see the knob next to him.. Now go
>> straight over to the little hole in the rock and down about an inch..."
>> It would be much easier to use the pointer but I don't want to disturb
>> the critters.
>>
>> --
>> Ann R
>>
>
>



Posted by George on May 5, 2005, 3:09 am
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> Guess what hubby's getting for mother's day!
>
> --
> Ann R
>> The glass and salt water of the tank should render a laser pointer harmless.
>> It would take quite a bit of staring into the beam to cause any damage to the
>> rods and cones of any creature.
>> At the low power put out by publicly available laser pointers, most are very
>> safe in that respect..
>> Modified output models are a different story.. (green + Ebay)
>>
>> I love using mine to play with my female clown, she is very diligent to chase
>> the red dot off of her anemone and around the tank..!
>>
>> CW

Most likely, she sees the dot as a black spot.

>>> Is it safe to use a red laser pointer for the tank? I'm getting tired of
>>> saying to hubby "See the shrimp? Ok - see the knob next to him.. Now go
>>> straight over to the little hole in the rock and down about an inch..." It
>>> would be much easier to use the pointer but I don't want to disturb the
>>> critters.
>>>
>>> --
>>> Ann R
>>>
>>
>>
>
>



Posted by George on May 5, 2005, 3:09 am
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> The glass and salt water of the tank should render a laser pointer harmless.
> It would take quite a bit of staring into the beam to cause any damage to the
> rods and cones of any creature.
> At the low power put out by publicly available laser pointers, most are very
> safe in that respect..
> Modified output models are a different story.. (green + Ebay)
>
> I love using mine to play with my female clown, she is very diligent to chase
> the red dot off of her anemone and around the tank..!
>
> CW

Most oceanic fish cannot see red light very well, if at all, anyway. Red light
doesn't penetrate the ocean very far down, which is why it always looks deep
blue in diving photos (actinic blue light is needed for saltwater aquariums
because that wavelength penetrates the deepest in water, and so most creatures
in the sea that need sunlight need this wavelength). Think about it. A maroon
clown fish is red because red makes for great camoflage. And the vertical white
stripes confuses predators because the fish is usually found in an anemone.

>> Is it safe to use a red laser pointer for the tank? I'm getting tired of
>> saying to hubby "See the shrimp? Ok - see the knob next to him.. Now go
>> straight over to the little hole in the rock and down about an inch..." It
>> would be much easier to use the pointer but I don't want to disturb the
>> critters.
>>
>> --
>> Ann R
>>
>
>



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