Does that mean black people wouldn't be mistaken for fish?
No. The black person is even more in danger imo. Because the pike will only see the white sole of the foot. Perhaps this will even look more like a fish, while it will see from the white person the moving leg too. Perhaps this deterres it from attack. But i think if the pike is really hungry it will make no difference.
P.S.
The city of Zolling (county Freising) has placed warning signs at the lake "Anglberger Weiher"
The fishing association Allershausen want now to hunt the aggressive pike.
In the article is mentioned, that pike attacks become more frequently in Bavarian lakes. In Pressath (county Neustadt an der Waldnaab) a pike bit a little girl recently in the arm.
There is mentioned, that the attacks happen always in the high and late summer. Perhaps the pikes are more hungry then because of higher water temperatures.
https://www.merkur.de/lokales/freising/zolling/monsterfisch-attacke-gefahr-schwimmen-biss-zolling-bayern-warnschilder-anglberger-weiher-zr-13818064.html