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duckweed predator

In a message dated 99-11-11 03:57:22 EST, you write:

<< >Try an environmentally freindly way of exterminating duckweed: put a small
 >Giant Gouramy (Osphronemus gouramy) in your tank. They eat the stuff. In
 >Indonesia duckweed is actually collected by some people who raise giant
 >gouramy for food.
 This sounds like trading a little problem for a big one.  What do you
 intend to do with this very large fish when you are done feeding him the
 duckweed?  Who wants a very large, extremely unattractive herbivorous fish
 that will live for many years?  Is it fair to kill it off when you are done
 with it?  Are you really willing to buy a several hundred gallon tank to
 house it if you don't kill it? >>

very good point, karen.  of course, the writer is from indonesia and was 
speaking from his experience.  after it gets too big, to the frying pan it 
goes...(i hear it's delicious!).

tsuh yang chen, nyc