I would guess immune. The thing is you don't want to introduce it to the fish. If its bad for you its not good for the fish.
bacpacker
I am not fond of fish either. I choose Tilapia because they have near no fishy taste. (If they are raised in a good environment)
Channel Catfish will go into my outdoor pond since they can endure the temp swings of Colorado. Tialapia die at 55F or lower.
I am doing what I can to reduce what has, is and will be incoming due to the economical issues going on.
If I can supply food I wont need to buy it. I use heirloom seeds so don't need to worry about GMO issues. And it also offers a mental moment B)
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