This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
魮 combines 魚 (fish) with 比, which likely contributes the sound. The exact historical development is uncertain.
A fish 魚 beside 比, which looks like two people side by side. Imagine two fish swimming together, but the kanji's meaning remains unclear.
For ヒ, picture a fish (魚) being compared (比) to another fish, and you say 'He!' (ヒ) in surprise at their similarity.