On Wed, 10 Sep 2003 22:14:54 GMT, "Günther De Vogelaere"
wrote:

When biologists try to chart the fishpopulation in open water, they often
use electricity to stun the fish.
Maybe this is a silly question, did anyone ever use/try electricity to catch
their (sick) fish out of a fully decorated tank?
Would this be a good idea? What current/voltage should be used?


The shocks used to stun fish are fairly intense. The distribution of
current flow throughout the water is between the electrodes but quite
a wide spread. Many variables are involved. Water conductance varies
hugely depending on dissolved salts. It would be very difficult to
isolate a single fish.


Steve
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