Someone explain reason behind this
 

I have always been told never to feed freshwater fish..sal****er
foods, and never to feed sal****er fish freshwater foods...be it
frozen or prepared items. Was always told its to keep from
introducing foreign critters into the environemnt that the fish are
not used to.

So whats the difference when it comes to feeding brine shrimp or
krill or any other number of frozen foods that say Fresh or salt water
fish on them. I often acclimate mollys or guppies to SW and feed
varous SW fish live foods. Last I read sw micro organisms do not
survive in FW anbd visa versa, so I am having a hard time reasoning
with the no to feed sw to fw etc etc.

I have fed what I wanted to feed all the time and as long as the fish
etc eat what I give them thats fine.......and have never had problems.
So whats everyone else's take on this? I have a bunch of cichlids that
will tear up my home brew frozen SW ifsh food which is mainly chopped
and diced and pureeded shrimp, krill, mysid, scallops, clams and
muscles and squid and assorted what ever is cheapest at the time some
kind of SW fish.



-------
I forgot more about ponds and koi than I'll ever know!

Someone explain reason behind this
 

Tristan wrote:
I have always been told never to feed freshwater fish..sal****er
foods, and never to feed sal****er fish freshwater foods...be it
frozen or prepared items. Was always told its to keep from
introducing foreign critters into the environemnt that the fish are
not used to.

Actually I always heard it the other way round - feed SW to FW and FW to
SW....because the pathogens for SW cannot survive in FW and vice versa...



So whats the difference when it comes to feeding brine shrimp or
krill or any other number of frozen foods that say Fresh or salt water
fish on them. I often acclimate mollys or guppies to SW and feed
varous SW fish live foods. Last I read sw micro organisms do not
survive in FW anbd visa versa, so I am having a hard time reasoning
with the no to feed sw to fw etc etc.

See above....looks like we have heard the same thing....

Gill

Someone explain reason behind this
 

Your way of thinking is also how I view it. Seems some online web
based forums do not view it that way....After all thats the reasoning
used behind hyposalinity with SW fish to rid a fish of parasites etc,
introduce it to FW so organisms are killed off........Add salt to FW
so those organisms are killed off..on FW fish etc.....All I know is I
have never had problems with what I feed to who so I guess there is
no need to change or modify it.



On Tue, 06 Feb 2007 20:31:41 +0000, Gill Passman
wrote:

Tristan wrote:
I have always been told never to feed freshwater fish..sal****er
foods, and never to feed sal****er fish freshwater foods...be it
frozen or prepared items. Was always told its to keep from
introducing foreign critters into the environemnt that the fish are
not used to.

Actually I always heard it the other way round - feed SW to FW and FW to
SW....because the pathogens for SW cannot survive in FW and vice versa...



So whats the difference when it comes to feeding brine shrimp or
krill or any other number of frozen foods that say Fresh or salt water
fish on them. I often acclimate mollys or guppies to SW and feed
varous SW fish live foods. Last I read sw micro organisms do not
survive in FW anbd visa versa, so I am having a hard time reasoning
with the no to feed sw to fw etc etc.

See above....looks like we have heard the same thing....

Gill



-------
I forgot more about ponds and koi than I'll ever know!

Someone explain reason behind this
 

"Gill Passman" wrote in message ...
Tristan wrote:
I have always been told never to feed freshwater fish..sal****er
foods, and never to feed sal****er fish freshwater foods...be it
frozen or prepared items. Was always told its to keep from
introducing foreign critters into the environemnt that the fish are
not used to.

Actually I always heard it the other way round - feed SW to FW and FW to
SW....because the pathogens for SW cannot survive in FW and vice versa...

From the point of view of pathogens, freshwater foods are probably
more safe to sal****er fish and vice versa... quite obvious.

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?

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

Someone explain reason behind this
 

Dunno, but I have a hard time beliveing that food stuff harvested from
FW or SW is really handled so that it is not a cesspool of pathogens
fron setting in the sun, becoming warm etc etc., Afterall its a fish
etc that is eating it, and who could tell one way or another if lousy
substance was indeed the problem, or how it was handled or how it was
stored and handled by vendor.......there is a long list of "what ifs"
in regards to decent food.....Heck we all know food destined for human
consumption is also not handled properly.........nor is feed stuff
intended for cows and other domestic critters made and stored
properly....
My wife is always condeming trailer loads of foods destined for
grocery stores all due to handling issues........so we can allpretty
well assure outselves pet foods are probably a deplorable
substance....then again animals can usually tolerate foods that a
human being could not dream of eating.........so maybe short of
nutrion its all not worth while being concerned with if your buying
spoiled frozen or stuff thats worth the price they ask.

I guess I will go on with making and feeding my home brew SW foods,
and also feed it to those FW fish that will eat it.....supplement what
I make with decent brand name at least pelleted feeds on both ends FW
and SW.
On Wed, 07 Feb 2007 00:22:13 +0000, Gill Passman
wrote:

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



-------
I forgot more about ponds and koi than I'll ever know!

Someone explain reason behind this
 

"Gill Passman" wrote in message ...
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....

There is no dilema!
Deep frozen stuff you buy for your fish
is pathogen free and safe to feed to your pets...
Unless you feed live foods you should be perfectly fine.
The best food for marine animals is marine in origin.

Someone explain reason behind this
 

Tristan wrote:
I have always been told never to feed freshwater fish..sal****er
foods, and never to feed sal****er fish freshwater foods...be it
frozen or prepared items. Was always told its to keep from
introducing foreign critters into the environemnt that the fish are
not used to.

In my short time, I've learned that there are lots of conflicting
theories and many "theories" are driven by superstition. I try to be
very objective and rational about how this works, but I think I also
have superstitions that I need to be wary of.

For instance, I was missing another blue damsel that I promptly blamed
on my green brittle star, and I was plotting it's demise for a few days.
Turns out that the damsel is alive and well, but spends most of it's
time in the rock work. I think the two other blue damsels paired off,
so this one is not only out of luck, but fears for it's life.

--Kurt

Someone explain reason behind this
 

"Pszemol" wrote in message
...
"Gill Passman" wrote in message
...
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....

There is no dilema!
Deep frozen stuff you buy for your fish
is pathogen free and safe to feed to your pets...

In the US, ethoxyquin, manufactured by Monsanto, is required by law to be
used as a preservative in fish destined for the pet food industry.
Ethoxyquin is listed and identified as a hazardous chemical by OSHA, the
Department of Agriculture lists and controls Ethoxyquin as a pesticide and
is a suspected carcinogen. Potentially cancer-causing agents such as BHA,
BHT, and ethoxyquin are permitted at relatively low levels, but the only
study was carried out by Monsanto itself.

Unless you feed live foods you should be perfectly fine.
The best food for marine animals is marine in origin.

Someone explain reason behind this
 

"cat daddy" wrote in message ...
In the US, ethoxyquin, manufactured by Monsanto, is required by law
to be used as a preservative in fish destined for the pet food industry.

Are you maybe talking about dog/cat food ?

I am talking about frozen krill and frozen ocean plankton.
The kinds I buy are made by San Francisco Bay:
http://www.sfbb.com/frozen.asp

For example: "Frozen Krill"
List of ingredients: Krill ----- 100%

Ethoxyquin is not listed on the package. Care to comment ?