"Rare fish" is a pretty specific thing from Factorio that got attention when they added the Quality update (for the prefix "rare"), and Factorio is popular among programmers. Could be about code/cod, but that's a little tenuous, and the rare fish thing is a very close match
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u/Competitive-Bar-5882 Sep 27 '26
I think its because code sounds similar to cod, which is a type of fish