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post #21 of 23 Old 04-06-2011, 10:13 PM
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Originally Posted by lorax84 View Post
Wow, I thought glofish were a little disturbing but this is just flat out wrong. I have never seen any of these fish in the stores I buy my fish from but if I did you can bet I would never be back.
Count yourself luck then lol! Dyed fish are quiet common. There is nothing wrong with glofish IMO. I feel those fish are more "ethical" then even some tank strain fish. Dyed fish are just one problem in this hobby among many. One of the pros I give glofish is the GM animal does not have to go through a coloring process to look the way it does. Its a step towards stopping dying IMO. I'm not going to totally burst your bubble here, but dyed fish are not the absolute worst thing this hobby has produced.

IMO everyone in this hobby should be at least somewhat familiar with common species of dyed fish. The OPs fish is needle injected not tattooed. While we humans usually associate needles with tattooing. Fish are tattooed with a lazer not a needle. Its fairly easy to tell the processes apart when looking at the fish.

Dyed with a dip or bath usually produces a solid color where the fish tends to be evenly dyed. Sometimes though there are only half way dyed. White skirt tetra that has been dyed in a bath.

http://www.vaquariumthailand.com/pro...anTetra534.jpg

Needle injection gives localized color, usually a line. Both dipping and needle injection only works on clear or pale colored fish, except for a few specific species. Same as the OP's fish.
http://app.onlinephotofiler.com/Imag....1600x1200.jpg

Tattooing is much different then the others. It does not need the fish to be clear or pale so the dye shows through. Tattooing has is easily identified by color on the scales instead of in the fish. The patterns tend to be much more "creative" one can say.
http://farm3.static.flickr.com/2694/...62fee181f4.jpg

Dyed and tattooing fish is illegal in the states. There are no laws though to stop the sale of dyed or tattooed fish that are imported.

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post #22 of 23 Old 04-06-2011, 10:17 PM
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is that what they do to the glo-fish? i think they are zebra danios are they not?? lol but ive never seen them do it to these tho .. i dont know much about it but i think it gets passed down genectically and when they die they ooze the colours out kinda nasty?? lol i have no idea.

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post #23 of 23 Old 04-06-2011, 10:46 PM
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is that what they do to the glo-fish? i think they are zebra danios are they not?? lol but ive never seen them do it to these tho .. i dont know much about it but i think it gets passed down genectically and when they die they ooze the colours out kinda nasty?? lol i have no idea.
Glofish are genetically modified animals. The had a fluorescent gene from a jelly fish inserted into their DNA. The strain for the aquarium causes the skin cells to be fluorescent. They are "normal zebra danios" except for this gene. This exact same process is used extensively in biological research. The gene used can make what ever part of the fish you want to glow if you insert it into the DNA correctly. A laboratory zebra daino may have the same gene, but look just like a normal zebra danio because that gene is instead set attached to, for example, white blood cells or nerve cells, so only those cells fluoresce.
Above is a video of a zebra danio embryo. Two fluorescent genes are used the blood cells are red and the blood vesicles are green. Its used to study development normally. Take a growing zebra danio egg with this gene and place it under a microscope and shine black light on it and you can watch exactly how the nervous system develops for example. The gene, like any, is definitely inheritable. Most Glofish are raised exactly the same as any normal zebra danio. When they breed the offspring will have the same colors.

I'm suddenly at a loss on why videos instantly embed when i try to hotlink them :S

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Last edited by Mikaila31; 04-06-2011 at 10:49 PM.
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