Someone explain reason behind this

Pszemol wrote:


The problem with feeding foods from different environment is
in my opinion related more to nutrition composition - feeding
freshwater animals to marine predators would probably cause
malnutrition since freshwater foods did not grow eating marine
plankton but rather terrestial plants, insects, fruits - different
food chain. Marine fish should eat marine foods rich in fatty
acids and nutrients found in the sea not terrestial plants, right?


Absolutely so here is the dilemma....on one hand it is good to feed FW
stuff from SW and SW good from FW from a pathogen and disease prevention
point of view...but on the other hand the nutritional requirements
differ....so if you feed FW fish exclusively on stuff from SW then you
are storing up health problems with liver/kidney/mineral
deficiency...and if you feed SW exclusively a freshwater diet you are
depriving them of the high protein diet and the type of plant matter
they can naturally digest....

Now logic would actually suggest that FW eat FW stuff and SW eat SW
stuff....but there are a number of articles that suggest that this is
the wrong way to go in terms of controlling disease and pathogens....but
nutritionally it doesn't make sense....

So by following this doctorate are we actually shortening the lives of
our fish and critters by protecting them from disease in the short term
only to get long term health issues? Or should we actually be
concentrating on finding healthy foodstuffs free of pathogens for both
our freshwater and sal****er buddies?

Gill