Post by wendyI keep my fish well fed, I have one very large Silver Dollar and since I
got him he hasn't been anywhere near my plants.
wendy
Many behaviours are taught, learned from observation or accidental. This
is what allows Angelfish to be brought up with Neons, until they
'discover' that Neons are tasty. This discovery comes from watching
other fish chasing the Neons, or the introduction of a new small fish
which gets eaten, or an Angelfish just gets very hungry and experiments.
Similarly, botia (type of loach) sometimes have to be shown that there is
a tasty morsel inside that snail shell to become good snailers.
In regards to the Silver dollar, it's eating & digestive system has
evolved away from its other characidae cousins (which include carnivorous
Piranhas) into a 'lawnmower'. Many types of fish (herbivores,
micro-predator etc) tend to snack almost continuously, so keeping them
well fed alone will not keep them off their natural diet. You are
relying on a bit of luck keeping a fish off its evolved diet. If you
miss some feedings, fish will often discover their ability to consume
something else (usually its natural foods but not always), and then your
Neons, snails or vegetation will all soon disappear.
There is a school of thought that feeding specific processed foods to
satisfy their natural dietary requirements may influence them away from
their natural sources. In this case, you would feed a Silver Dollar
spirulina wafers (which they love), bloodworms & shrimp to the loaches
and feeder fish (rosies) to the Angelfish. This strategy might work on a
nutritional level, providing a closer balance of minerals and vitamins
which they have evolved towards, but behaviourally, the results can be
mixed, ie: "that wafer sure smells a lot like that Anacharis I swim past
every day" thought the Silver Dollar ;~), so ymmv.
cheers
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