噞 is a traditional Chinese hanzi, listed here under the keyword “the movement of a fish's mouth at the surface of the water”. It is built from 口 (mouth) and 僉 (all).
Keyword
the movement of a fish's mouth at the surface of the water
On KumiJi Glyph Explorer, open the parts search and type “mouth” + “all”. 噞 is among the results, together with every other character containing the same shapes.
Open 噞 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.