Bringing back fish on Air Canada - a question

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I haven't called Air Canada because I have found from experience that I can not rely on them. Unfortunately I am forced by circumstance (small town) to fly on this airline. They have screwed up so many things that I don't believe anything they tell me. If I get an Air Canada representative on the phone he will either not know the answer, tell me the wrong answer, or make up an answer just to get rid of me. That is why I want people's own experiences before I risk buying some fish and seeing whether it makes it home with me or not.