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Re: preserving fish
Ever since formaldehyde was identified as a carcinogen, its use can not
One good preservative solution is made up from 70% ethanol + 10%
glycerine. Let the specimen soak in it for a week or two, then change to
fresh solution. Bulky specimens may require two or more changes to freah
(I think that propanol can be substituted for ethanol.)
One uses 70% ethanol, because 95% ethanol will dehydrate (and deform)
the specimen. Glycerin is there to maintain pliability and some
protection in case the alcohol evaporates.
> How does one go about preserving fish specimens? I'm actually not asking
> about this for killies, but for dwarf gouramis that I did my research
> project on this semester. I crossed the wild type with the red and blue
> color morphs, and got some interesting looking fish. I'm a genetics major,
> & I'll be working with these fish & their descendants for awhile.
> I don't actually want to kill any of my fish, but I have had a hard time
> photographing my F1 generations (pics are up at
> http://www.4thcoast.com/fish/), and was thinking maybe I should turn in
> some of the actual fish.
> Does putting them in alcohol work? I think I've read that people do that on
> collecting trips. Is there a better preservative?