>Dear fish ecologists:
>
>There really is no delicate way to ask this....... What is the most
>"compassionate" way to blind small fish for feeding experiments?

I don't know if you can do it any more or not, but a long time ago, we
blinded fish by injecting a small amount of 3% aqueous benzethonium
chloride into the eyeball with a syringe.  The eye turned opaque in about
30 minutes or so.  Have fun getting that through your animal care and use
committee!


>
>Thanks,
>
>Ian Quittner
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George LaBar, Head
Department of Fish & Wildlife Resources
University of Idaho
Moscow, ID 83844