Novel idea...but I'm thinkin not. Apart from the obvious two of the fish swim backwards and, if my fish professor is to be believed (yes I do have a professor of fish) they can't do that because the gill plates are too thin and because of the direction of flow of the water through the buccal cavity (some fish can swim backwards, but not many...members of the eel family can swim backwards...also, I think, lungfish ). And now I'm going to stop typing...ahem....
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