Meaning
A plain blue or grey fish swimming sideways, with fins and a forked tail. It stands for fish in general, from the ones in rivers to the ones on a dinner plate.
It suits fishing trips, seafood dinners, cat treats with 🐈 and the idea of something fishy, meaning suspicious; in some countries it is also tied to April Fools’ Day. Example: “That deal sounds a bit fishy to me 🐟”.