This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
魥 combines 魚 (fish) with 及, but the historical origin and original meaning are uncertain. It may be a phono-semantic compound where 及 contributes the sound, but this is speculative.
With 魚 on the left and 及 on the right, picture a fish that reaches out with a fin: the shape suggests a fish-related idea, but the exact meaning is unclear.
For キョウ, imagine a fish in Kyoto (キョウ) reaching out of the water: Kyoto -> キョウ, and the fish shape ties it to the kanji.