What 鮛 means
It names a small sturgeon or sturgeon-like fish. The earliest known written witness is a fish entry in the Erya, an early Chinese glossary usually dated to around the 3rd century BCE.
The terse gloss 鮥，鮛鮪 places 鮛 in an old fish-name distinction: 王鮪 is the larger fish, while 鮛 names the smaller one.
Was 鮛 used for Jesus?
Yes—in 耶鮛, it appears in a written form of Jesus's name. A historical-text index records it in Chinese Christian works from 1881 and 1904, during the late Qing, China's last imperial dynasty. This is a later spelling use, not evidence that the fish meaning became religious.
A rare historical character whose reading depends on its compound or source.
If it arrives alone, ask for context before assigning a meaning.
What it means when someone sends it to you
3 readingsQuestions people ask
1Why does 鮛 show as a box?
The active font or app may lack a glyph for 鮛, so it can appear as an empty box. A font with support can display it; the character itself is unchanged.
How to type 鮛
鮛\9B9BCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.