What reason did paul give for never sharing his theroy about the vanishing fish with any adult

I don't think Paul takes much stock in adults, they have failed him so many times in the past. Paul eventually does tell them. The people in the meeting talk about the missing koi fish. They’re all convinced that someone is stealing them. Paul walks into the meeting and interrupts. He says that their theory makes no sense. Who would steal the fish and how would they do it? He explains that it’s the osprey that are doing it. He says that he’s seen them.