These are the DXFs, Corerdraw and STL files for the new 2-part solvent-welded laser-cut perspex fish stalk-bases for use with the 4-Mation - Version 2 Fish animation: https://www.thingiverse.com/thing:3888701
Or - alternatively - you could 3D print them from clear resin. The stalk would be still be brittle and no good against shipping drops, but it does mean you can use the upgraded Fish V2 design, and take advantage of easier painting with separate removable stalks.
You need 6 of the angled stalk-bases 21 of the small thin stalk-bases, and 28 standard stalk-bases.
For the laser cut perspex stalk-bases, you laser the cut the bases separately from 3mm perspex sheet, and the stalks from 3mm and 2mm square persex rods.
Then you solvent weld them together using a cast silicone jig which you made using 3D printed stalk-bases.
Note that laser cutting the angled stalk is tricky - I'll update this thing if and when I figure out a nice way to do it.