I think you were joking here, but holy crap yes I would take fishing advice from a fish (provided it was a human-level intelligent fish that spoke english... which if I'm following your metaphor correctly it is in this case)
More generally the issue with "not asking fish how to fish" is it's the exact opposite of how successful companies treat customers. I ask my customers how they liked the product, what they'd change, how they'd sell it to other customers, etc, etc. That isn't an error. It's one of the most effective business improvement tactics I know of.
This is not to say that the information source is unbiased (customers are much less likely to suggest a price hike for example), or particularly skilled at knowing how to address their needs (they'll ask for a "faster horse" when they mean "gasoline engine" to ruin a quote)... but the fact remains that fish (customers or investors) are the best source of information you have.