  We construct an approximately conserved current for $2+1$ dimensional,
Aristotelian (non boost invariant), fluid flow. When Aristotelian symmetry is
enhanced to Galilean symmetry, this current matches the enstrophy current
responsible for the inverse cascade in incompressible fluids. Other
enhancements of Aristotelian symmetry discussed in this work include
Lorentzian, Carrollian and Lifshitz scale symmetry.
