I am simulating some fluid inside a jar/can. The can moves around and the fluid remains inside. I have a fairly high voxel count, 65million. But when it comes to surfacing the fluid, it looks really fake. There are too many long strands and not enough full surface.

How can I get better surfacing of fluid in this scenario?

You mentioned the voxel count, but not the particle count. Most likely you have too sparse of a particle count, and too large of a droplet scale on the particle fluid surface sop. Also, I like to convert the particle fluid surface output into a vdb, then you can run vdb operations on it, to craft your mesh, such as vdb smooth, etc, Then after that, you can convert back to polygons. That should give you more control of your mesh, but first trying upping the particle count and reducing the droplet scale.

Thanks, adding more particles per voxel does help out.

I added +10 to the default reseeding expression and that helped improve the look.