I was told that a number of users here do not believe that some (alot) of fish are dyed. I figure i would comment on this, show proof, and possible answer all questions.
dyed fish list
What can you do to stop it?
Please visit the link in my signature for more information
How is the dye applied?
Intrigued as to how the dye was applied we decided to carry out a little research. A few coloured glassfish were sedated in MS222 anaesthetic and observed under a binocular microscope. It became apparent that the dye is not on the surface of the fish, but lay under the epidermis.
Furthermore, the dye appeared fluid and could be moved slightly by gently squeezing the coloured area.
This suggested that it must have been injected into the fish at various sites over the body in order to form the distinctive colour patterns. Our fears were confirmed a few years later when we were shown photographs of the colouring process, revealing that each fish is individually injected using a syringe and needle.
The practice of dye injection is undertaken by fish farmers in some regions of Asia (but not Singapore as far as we know). Clearly, the common name “painted glassfish” is a cruelly misleading description.
If one considers the relative bore size of the injection needle with that of a glassfish, it would be the equivalent of us receiving several jabs using a needle of pencil-sized diameter - not a pleasant thought.
As experienced fish scientists, we would never dream of injecting fish of such small size. No wonder the injection process is alleged to cause high mortalities.
Increasing the risk of disease...
A survey which we carried out in the south of England revealed that over 40% of painted glassfish appeared to be suffering from lymphocystis virus. This disease manifests itself as a small whitish growths on the fish’s body and fins.
An examination of the white growths under the powerful electron microscope confirmed our diagnosis. In contrast, less than 10% of the natural (unpainted) glassfish had lymphocystis.
It is possible that the injection process increases the risk of this disease, perhaps by transmitting the virus from fish to fish via the needle (the same needle is used to inject tens or even hundreds of fish).
Alternatively, the stress of being injected with the dye may lower the fish’s natural immunity to lymphocystis. It must be said that, in our experience, those glassfish which survive the injection process go on to live fairly normal lives, despite the gaudy dyes present within their bodies. In time, the dye fades.
Many people believe that fish do not feel pain and so injecting them with dyes is perfectly acceptable. In fact, increasing scientific evidence suggests that fish are indeed capable of feeling pain, though we have no way of telling whether they perceive painful events in the same way as we do.
So dye injection is likely to be a painful experience for the poor glassfish. In fairness, many traders and hobbyists were mislead, just as we first were, into thinking that these fish were simply painted with the dye.
Now that the truth is out, it’s time to stop this cruel practice, once and for all.
The PFK Ban Dyed Fish Campaign
Practical Fishkeeping ran an award-winning campaign which started in 1996 and asked aquatic retailers to sign a pledge that they would not sell dyed fish. The majority of British retailers signed up and dyed fish are now relatively uncommon in the UK
!!!NOW ITS OUR TURN TO BAN DYED FISH IN AMERICA!!!