This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
鱜 combines the fish radical 魚 with the phonetic component 鄉. The exact historical development and original meaning are uncertain.
With no clear meaning, picture a mysterious fish (魚) from a distant village (鄉) whose name has been lost to time.
For キョウ, imagine a fish from a far-off village (鄉) that the locals call 'kyou'—a made-up name for a forgotten fish.