loopy livernose wrote:


"Mister Gardener" wrote in message
...

Recently, officials were finally able to capture and remove an
alligator that had survived 3 winters in a Maine pond.


An alligator, btw, is subtropical (not to mention much more massive). Jack
Dempseys are tropical. The fact that an alligator could survive says
nothing about Dempseys.

I have a Very few Ramshorn (natural pond snails that are native) snails in
my pond, but they breed very slowly and if the fish don't eat them, I
don't know why I have so few.

Fish and/or acid rain. Acidity weakens their shells, making it easier for
fish to extract the snail, but goldfish and koi will munch on snails
anyway.
--
derek