Well, the problem with feeding fish Omega 3's or any other nutrient for that matter is that although it "might" increase the amount of that supplement in the fish, it probably won't increase it to a level that is biologically significant (or cost effective).
We have these same kind of problems in pretty much all forms of animal agriculture.
For example... (totally hypothetical with bs numbers for illustrative purposes)
Fish 1 who eats "regular feed" has 0.1 grams of omega-3 fatty acid per serving in their meat.
Fish 2 who eats an "Enhanced omega-3" feed has 0.2 grams of omega-3 fatty acid per serving in their meat
But lets say the daily recommended value for Omega-3 for human consumption is 10 grams, otherwise you don't get the benefits.
Even though Fish 2 has two times the amount of omega-3, you are still a long way off from what you would need to make it biologically significant or in other words useful.
In the grand scheme of things going from .1 grams omega 3 to .2 grams omega 3 isn't worth the expense or hassle when 10grams is the mark (again, hypothetical).
But then again, we know less about fish nutrition than anything else we raise for food (with the exception of catfish maybe) so maybe it wouldn't turn out that way.
But on the other hand, since we know so little, it would be more cost effective to just take an omega-3 supplement. Chances are you would be wasting your money trying to feed omega-3's to your fish.
Last edited by Gflo; 07/21/10 09:38 PM.