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Does gluten and/or soy in fish food carry through to the fish meat or their excrement?

Answered on August 19, 2014
Created April 04, 2012 at 4:54 PM

I've been trying to search for information on this, but I can't think of a way to phrase my search query to get results.

I am gluten, soy and dairy free due to autoimmune disease and I have been Paleo for about 18 months. I am planning to build an aquaponics system to grow my own vegetables, and eventually my own fish. I can't seem to find a commercial fish food that does not contain gluten and/or soy. So my question is - if I feed the fish a product containing gluten and/or soy...will their meat be contaminated? And will there excrement be contaminated, therefore possibly contaminating my vegetables?

Someday, when I have more space, I can grow duckweed for fish food. But in the meantime, I need to figure out if I 'm going to undo all of my efforts if I feed the fish gluten and soy.

Thank you in advance!

EDIT 5/25/12 - Found out that the seafood/meat manager at my local organic grocery store is a marine biologist. Asked him about soy and gluten in the fish excrement and he said that the stomach acid of the fish will destroy the gluten and soy proteins...so as long as I'm not eating the fish, I don't have to worry about the food ingredients. I still want to try to find some kind of organic fish food, but at least now I know I'll be able to use pellets or dissolving food to take care of the fish when I'm traveling!

58c33847c5b7ecbf6572075df2cdd002

(866)

on April 04, 2012
at 10:25 PM

For anyone curious about my aquaponics system: http://attemptingaquaponics.blogspot.com/

58c33847c5b7ecbf6572075df2cdd002

(866)

on April 04, 2012
at 09:02 PM

Right now its a very small system and I will not be raising edible fish. I'm going to use goldfish. Just talked to a local aquatics guy who said I could feed the fish the things you listed. My other issue is that we travel a lot, so I would like to find some kind of automatic fish feeder or slow-dissolve pellets. But they are all loaded with gluten, corn and soy. The aquatics guy said the fish can go several days without eating, though. Maybe my fish will do intermittent fasting :-)

58c33847c5b7ecbf6572075df2cdd002

(866)

on April 04, 2012
at 09:00 PM

I haven't eaten farmed fish in over a year, so I don't know and don't really want to risk it. I have found a fish food supplier that is organic and non-GMO, but its still loaded with soy, corn and wheat. Guess I'm going to be making some fish food.

58c33847c5b7ecbf6572075df2cdd002

(866)

on April 04, 2012
at 08:58 PM

I have a very small system right now - the rafts are floating in a five foot trough (three rafts with 20 net pots each) and the fish "tank" is 27 gallons. I don't plan to use this system for edible fish...I will be getting a couple of goldfish in the next couple of weeks and I may add mollies or mosquito fish to the trough if I run into any issues with mosquitos (its on a screened-in balcony, so I doubt this will be necessary). As for filtration - the plant roots will take care of that! And in the future I will likely raise tilapia, but will not overcrowd them as they like to explore.

8508fec4bae4a580d1e1b807058fee8e

(6244)

on April 04, 2012
at 07:48 PM

Allergens like gluten, soy, etc. can pass through breastmilk, so I assume they can pass through many bodily fluids/components. Your idea sounds really interesting. How many fish and how big is your tank going to be? Some fish will eat frozen or fresh foods (expensive) like kelp, algae, shrimp, lettuce, spinach, plankton, krill, squid, etc.

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2 Answers

1
4b5be253ac1981c690689cab7e4bf06d

(3043)

on April 04, 2012
at 05:36 PM

Yes, it can.

There are some people who are very sensitive to corn, gluten, and soy, and it can be very hard to find meat sources that do not contain these. My raw milk farmer has "soy free eggs" for those that are allergic to soy, and this is becoming more common.

The question would be, "can you tolerate farm fish from the store?" If so, then it probably will not be a big issue for you while you search for other food sources. If you cannot tolerate farmed fish and you think it is because of the gluten or soy in their diet, then you could look into other fish foods and/or making your own.

58c33847c5b7ecbf6572075df2cdd002

(866)

on April 04, 2012
at 09:00 PM

I haven't eaten farmed fish in over a year, so I don't know and don't really want to risk it. I have found a fish food supplier that is organic and non-GMO, but its still loaded with soy, corn and wheat. Guess I'm going to be making some fish food.

1
78cb3c4f70de5db2adb52b6b9671894b

on April 04, 2012
at 05:31 PM

I don't know the answer, but I am wondering how much space the fish will have. The reason farmed fish can often be more "toxic" than wild fish is because of poor quality filters in tanks and overcrowding. Also, if there is any disease, it will spread very easily. So just keep that in mind.

What kind of fish are you going to raise? That sounds pretty exciting!

58c33847c5b7ecbf6572075df2cdd002

(866)

on April 04, 2012
at 08:58 PM

I have a very small system right now - the rafts are floating in a five foot trough (three rafts with 20 net pots each) and the fish "tank" is 27 gallons. I don't plan to use this system for edible fish...I will be getting a couple of goldfish in the next couple of weeks and I may add mollies or mosquito fish to the trough if I run into any issues with mosquitos (its on a screened-in balcony, so I doubt this will be necessary). As for filtration - the plant roots will take care of that! And in the future I will likely raise tilapia, but will not overcrowd them as they like to explore.

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